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Finding the Fourth Proportional to 86,482.47, 129,711.15 and 33,187.86

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Solution

The fourth proportional to 86,482.47, 129,711.15 and 33,187.86 is: 49,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,482.47 : 129,711.15 = 33,187.86 : x
  2. Step 2: Convert to fraction form
    86,482.47/129,711.15 = 33,187.86/x
  3. Step 3: Cross multiply
    86,482.47x = 129,711.15 × 33,187.86
  4. Step 4: Simplify right side
    86,482.47x = 4,304,834,996.42
  5. Step 5: Solve for x
    x = 4,304,834,996.42/86,482.47
  6. Step 6: Final answer
    x = 49,776.97

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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.