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Finding the Fourth Proportional to 101,403.60, 151,957.50 and 57,042.78

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Solution

The fourth proportional to 101,403.60, 151,957.50 and 57,042.78 is: 85,480.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,403.60 : 151,957.50 = 57,042.78 : x
  2. Step 2: Convert to fraction form
    101,403.60/151,957.50 = 57,042.78/x
  3. Step 3: Cross multiply
    101,403.60x = 151,957.50 × 57,042.78
  4. Step 4: Simplify right side
    101,403.60x = 8,668,078,241.85
  5. Step 5: Solve for x
    x = 8,668,078,241.85/101,403.60
  6. Step 6: Final answer
    x = 85,480.97

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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.