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Finding the Fourth Proportional to 86,281.52, 129,368.67 and 36,335.90

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Solution

The fourth proportional to 86,281.52, 129,368.67 and 36,335.90 is: 54,481.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,281.52 : 129,368.67 = 36,335.90 : x
  2. Step 2: Convert to fraction form
    86,281.52/129,368.67 = 36,335.90/x
  3. Step 3: Cross multiply
    86,281.52x = 129,368.67 × 36,335.90
  4. Step 4: Simplify right side
    86,281.52x = 4,700,727,056.25
  5. Step 5: Solve for x
    x = 4,700,727,056.25/86,281.52
  6. Step 6: Final answer
    x = 54,481.27

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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.