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Finding the Fourth Proportional to 86,542.68, 129,767.58 and 44,405.40

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Solution

The fourth proportional to 86,542.68, 129,767.58 and 44,405.40 is: 66,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,542.68 : 129,767.58 = 44,405.40 : x
  2. Step 2: Convert to fraction form
    86,542.68/129,767.58 = 44,405.40/x
  3. Step 3: Cross multiply
    86,542.68x = 129,767.58 × 44,405.40
  4. Step 4: Simplify right side
    86,542.68x = 5,762,381,296.93
  5. Step 5: Solve for x
    x = 5,762,381,296.93/86,542.68
  6. Step 6: Final answer
    x = 66,584.27

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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.