Home / 81,972,728.30-123,006,331.65-30,891,406.70

Finding the Fourth Proportional to 81,972,728.30, 123,006,331.65 and 30,891,406.70

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Solution

The fourth proportional to 81,972,728.30, 123,006,331.65 and 30,891,406.70 is: 46,354,912.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972,728.30 : 123,006,331.65 = 30,891,406.70 : x
  2. Step 2: Convert to fraction form
    81,972,728.30/123,006,331.65 = 30,891,406.70/x
  3. Step 3: Cross multiply
    81,972,728.30x = 123,006,331.65 × 30,891,406.70
  4. Step 4: Simplify right side
    81,972,728.30x = 3,799,838,617,675,232
  5. Step 5: Solve for x
    x = 3,799,838,617,675,232/81,972,728.30
  6. Step 6: Final answer
    x = 46,354,912.13

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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.