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Finding the Fourth Proportional to 88,325, 121,890.42 and 48,581

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Solution

The fourth proportional to 88,325, 121,890.42 and 48,581 is: 67,042.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,325 : 121,890.42 = 48,581 : x
  2. Step 2: Convert to fraction form
    88,325/121,890.42 = 48,581/x
  3. Step 3: Cross multiply
    88,325x = 121,890.42 × 48,581
  4. Step 4: Simplify right side
    88,325x = 5,921,558,494.02
  5. Step 5: Solve for x
    x = 5,921,558,494.02/88,325
  6. Step 6: Final answer
    x = 67,042.84

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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.