Home / 72,373,812.80-108,560,719.20-18,521,124.80

Finding the Fourth Proportional to 72,373,812.80, 108,560,719.20 and 18,521,124.80

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Solution

The fourth proportional to 72,373,812.80, 108,560,719.20 and 18,521,124.80 is: 27,781,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,373,812.80 : 108,560,719.20 = 18,521,124.80 : x
  2. Step 2: Convert to fraction form
    72,373,812.80/108,560,719.20 = 18,521,124.80/x
  3. Step 3: Cross multiply
    72,373,812.80x = 108,560,719.20 × 18,521,124.80
  4. Step 4: Simplify right side
    72,373,812.80x = 2,010,666,628,680,956.25
  5. Step 5: Solve for x
    x = 2,010,666,628,680,956.25/72,373,812.80
  6. Step 6: Final answer
    x = 27,781,687.20

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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.