Home / 71,505,320.38-107,258,977.02-20,387,339.18

Finding the Fourth Proportional to 71,505,320.38, 107,258,977.02 and 20,387,339.18

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Solution

The fourth proportional to 71,505,320.38, 107,258,977.02 and 20,387,339.18 is: 30,581,292.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,505,320.38 : 107,258,977.02 = 20,387,339.18 : x
  2. Step 2: Convert to fraction form
    71,505,320.38/107,258,977.02 = 20,387,339.18/x
  3. Step 3: Cross multiply
    71,505,320.38x = 107,258,977.02 × 20,387,339.18
  4. Step 4: Simplify right side
    71,505,320.38x = 2,186,725,144,606,565.50
  5. Step 5: Solve for x
    x = 2,186,725,144,606,565.50/71,505,320.38
  6. Step 6: Final answer
    x = 30,581,292.87

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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.