Home / 86,651.46-129,877.56-39,805.92

Finding the Fourth Proportional to 86,651.46, 129,877.56 and 39,805.92

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Solution

The fourth proportional to 86,651.46, 129,877.56 and 39,805.92 is: 59,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.46 : 129,877.56 = 39,805.92 : x
  2. Step 2: Convert to fraction form
    86,651.46/129,877.56 = 39,805.92/x
  3. Step 3: Cross multiply
    86,651.46x = 129,877.56 × 39,805.92
  4. Step 4: Simplify right side
    86,651.46x = 5,169,895,763.16
  5. Step 5: Solve for x
    x = 5,169,895,763.16/86,651.46
  6. Step 6: Final answer
    x = 59,663.11

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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.