Home / 78,524.67-108,364.40-42,714.91

Finding the Fourth Proportional to 78,524.67, 108,364.40 and 42,714.91

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Solution

The fourth proportional to 78,524.67, 108,364.40 and 42,714.91 is: 58,946.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,524.67 : 108,364.40 = 42,714.91 : x
  2. Step 2: Convert to fraction form
    78,524.67/108,364.40 = 42,714.91/x
  3. Step 3: Cross multiply
    78,524.67x = 108,364.40 × 42,714.91
  4. Step 4: Simplify right side
    78,524.67x = 4,628,775,675.27
  5. Step 5: Solve for x
    x = 4,628,775,675.27/78,524.67
  6. Step 6: Final answer
    x = 58,946.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.