Home / 72,373,809.80-108,560,714.70-18,521,121.80

Finding the Fourth Proportional to 72,373,809.80, 108,560,714.70 and 18,521,121.80

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Solution

The fourth proportional to 72,373,809.80, 108,560,714.70 and 18,521,121.80 is: 27,781,682.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,373,809.80 : 108,560,714.70 = 18,521,121.80 : x
  2. Step 2: Convert to fraction form
    72,373,809.80/108,560,714.70 = 18,521,121.80/x
  3. Step 3: Cross multiply
    72,373,809.80x = 108,560,714.70 × 18,521,121.80
  4. Step 4: Simplify right side
    72,373,809.80x = 2,010,666,219,653,750.50
  5. Step 5: Solve for x
    x = 2,010,666,219,653,750.50/72,373,809.80
  6. Step 6: Final answer
    x = 27,781,682.70

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.