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Finding the Fourth Proportional to 89,146.61, 133,763.45 and 39,220.47

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Solution

The fourth proportional to 89,146.61, 133,763.45 and 39,220.47 is: 58,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,146.61 : 133,763.45 = 39,220.47 : x
  2. Step 2: Convert to fraction form
    89,146.61/133,763.45 = 39,220.47/x
  3. Step 3: Cross multiply
    89,146.61x = 133,763.45 × 39,220.47
  4. Step 4: Simplify right side
    89,146.61x = 5,246,265,377.82
  5. Step 5: Solve for x
    x = 5,246,265,377.82/89,146.61
  6. Step 6: Final answer
    x = 58,849.86

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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.