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Finding the Fourth Proportional to 89,790.92, 134,657.22 and 42,398.68

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Solution

The fourth proportional to 89,790.92, 134,657.22 and 42,398.68 is: 63,584.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,790.92 : 134,657.22 = 42,398.68 : x
  2. Step 2: Convert to fraction form
    89,790.92/134,657.22 = 42,398.68/x
  3. Step 3: Cross multiply
    89,790.92x = 134,657.22 × 42,398.68
  4. Step 4: Simplify right side
    89,790.92x = 5,709,288,380.47
  5. Step 5: Solve for x
    x = 5,709,288,380.47/89,790.92
  6. Step 6: Final answer
    x = 63,584.25

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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.