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Finding the Fourth Proportional to 72,142.58, 108,066.86 and 58,862.90

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Solution

The fourth proportional to 72,142.58, 108,066.86 and 58,862.90 is: 88,174.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,142.58 : 108,066.86 = 58,862.90 : x
  2. Step 2: Convert to fraction form
    72,142.58/108,066.86 = 58,862.90/x
  3. Step 3: Cross multiply
    72,142.58x = 108,066.86 × 58,862.90
  4. Step 4: Simplify right side
    72,142.58x = 6,361,128,773.49
  5. Step 5: Solve for x
    x = 6,361,128,773.49/72,142.58
  6. Step 6: Final answer
    x = 88,174.40

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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.