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Finding the Fourth Proportional to 86,287.48, 129,462.18 and 33,734.68

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Solution

The fourth proportional to 86,287.48, 129,462.18 and 33,734.68 is: 50,614.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,287.48 : 129,462.18 = 33,734.68 : x
  2. Step 2: Convert to fraction form
    86,287.48/129,462.18 = 33,734.68/x
  3. Step 3: Cross multiply
    86,287.48x = 129,462.18 × 33,734.68
  4. Step 4: Simplify right side
    86,287.48x = 4,367,365,214.40
  5. Step 5: Solve for x
    x = 4,367,365,214.40/86,287.48
  6. Step 6: Final answer
    x = 50,614.12

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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.