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Finding the Fourth Proportional to 86,543.49, 129,819.96 and 27,374.76

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Solution

The fourth proportional to 86,543.49, 129,819.96 and 27,374.76 is: 41,063.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,543.49 : 129,819.96 = 27,374.76 : x
  2. Step 2: Convert to fraction form
    86,543.49/129,819.96 = 27,374.76/x
  3. Step 3: Cross multiply
    86,543.49x = 129,819.96 × 27,374.76
  4. Step 4: Simplify right side
    86,543.49x = 3,553,790,248.21
  5. Step 5: Solve for x
    x = 3,553,790,248.21/86,543.49
  6. Step 6: Final answer
    x = 41,063.63

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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.