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Finding the Fourth Proportional to 89,614.91, 134,339.29 and 39,668.39

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Solution

The fourth proportional to 89,614.91, 134,339.29 and 39,668.39 is: 59,465.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,614.91 : 134,339.29 = 39,668.39 : x
  2. Step 2: Convert to fraction form
    89,614.91/134,339.29 = 39,668.39/x
  3. Step 3: Cross multiply
    89,614.91x = 134,339.29 × 39,668.39
  4. Step 4: Simplify right side
    89,614.91x = 5,329,023,149.70
  5. Step 5: Solve for x
    x = 5,329,023,149.70/89,614.91
  6. Step 6: Final answer
    x = 59,465.81

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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.