Home / 77,982,721.80-116,974,082.70-71,936,104.20

Finding the Fourth Proportional to 77,982,721.80, 116,974,082.70 and 71,936,104.20

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Solution

The fourth proportional to 77,982,721.80, 116,974,082.70 and 71,936,104.20 is: 107,904,156.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,982,721.80 : 116,974,082.70 = 71,936,104.20 : x
  2. Step 2: Convert to fraction form
    77,982,721.80/116,974,082.70 = 71,936,104.20/x
  3. Step 3: Cross multiply
    77,982,721.80x = 116,974,082.70 × 71,936,104.20
  4. Step 4: Simplify right side
    77,982,721.80x = 8,414,659,801,806,618
  5. Step 5: Solve for x
    x = 8,414,659,801,806,618/77,982,721.80
  6. Step 6: Final answer
    x = 107,904,156.30

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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.