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Finding the Fourth Proportional to 89,265.83, 133,909.74 and 39,358.49

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Solution

The fourth proportional to 89,265.83, 133,909.74 and 39,358.49 is: 59,042.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,265.83 : 133,909.74 = 39,358.49 : x
  2. Step 2: Convert to fraction form
    89,265.83/133,909.74 = 39,358.49/x
  3. Step 3: Cross multiply
    89,265.83x = 133,909.74 × 39,358.49
  4. Step 4: Simplify right side
    89,265.83x = 5,270,484,493.14
  5. Step 5: Solve for x
    x = 5,270,484,493.14/89,265.83
  6. Step 6: Final answer
    x = 59,042.58

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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.