Home / 86,469.20-129,614.64-62,717.28

Finding the Fourth Proportional to 86,469.20, 129,614.64 and 62,717.28

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Solution

The fourth proportional to 86,469.20, 129,614.64 and 62,717.28 is: 94,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,469.20 : 129,614.64 = 62,717.28 : x
  2. Step 2: Convert to fraction form
    86,469.20/129,614.64 = 62,717.28/x
  3. Step 3: Cross multiply
    86,469.20x = 129,614.64 × 62,717.28
  4. Step 4: Simplify right side
    86,469.20x = 8,129,077,668.98
  5. Step 5: Solve for x
    x = 8,129,077,668.98/86,469.20
  6. Step 6: Final answer
    x = 94,011.25

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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.