Home / 71,463.17-98,615.79-39,631.38

Finding the Fourth Proportional to 71,463.17, 98,615.79 and 39,631.38

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Solution

The fourth proportional to 71,463.17, 98,615.79 and 39,631.38 is: 54,689.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,463.17 : 98,615.79 = 39,631.38 : x
  2. Step 2: Convert to fraction form
    71,463.17/98,615.79 = 39,631.38/x
  3. Step 3: Cross multiply
    71,463.17x = 98,615.79 × 39,631.38
  4. Step 4: Simplify right side
    71,463.17x = 3,908,279,847.49
  5. Step 5: Solve for x
    x = 3,908,279,847.49/71,463.17
  6. Step 6: Final answer
    x = 54,689.43

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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.