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Finding the Fourth Proportional to 65,179.76, 89,901.63 and 59,819.45

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Solution

The fourth proportional to 65,179.76, 89,901.63 and 59,819.45 is: 82,508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,179.76 : 89,901.63 = 59,819.45 : x
  2. Step 2: Convert to fraction form
    65,179.76/89,901.63 = 59,819.45/x
  3. Step 3: Cross multiply
    65,179.76x = 89,901.63 × 59,819.45
  4. Step 4: Simplify right side
    65,179.76x = 5,377,865,611.20
  5. Step 5: Solve for x
    x = 5,377,865,611.20/65,179.76
  6. Step 6: Final answer
    x = 82,508.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.