Home / 71,908.38-99,234.25-39,644.18

Finding the Fourth Proportional to 71,908.38, 99,234.25 and 39,644.18

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Solution

The fourth proportional to 71,908.38, 99,234.25 and 39,644.18 is: 54,709.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,908.38 : 99,234.25 = 39,644.18 : x
  2. Step 2: Convert to fraction form
    71,908.38/99,234.25 = 39,644.18/x
  3. Step 3: Cross multiply
    71,908.38x = 99,234.25 × 39,644.18
  4. Step 4: Simplify right side
    71,908.38x = 3,934,060,343.49
  5. Step 5: Solve for x
    x = 3,934,060,343.49/71,908.38
  6. Step 6: Final answer
    x = 54,709.34

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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.