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Finding the Fourth Proportional to 88,120.86, 132,140.29 and 31,958.70

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Solution

The fourth proportional to 88,120.86, 132,140.29 and 31,958.70 is: 47,923.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,120.86 : 132,140.29 = 31,958.70 : x
  2. Step 2: Convert to fraction form
    88,120.86/132,140.29 = 31,958.70/x
  3. Step 3: Cross multiply
    88,120.86x = 132,140.29 × 31,958.70
  4. Step 4: Simplify right side
    88,120.86x = 4,223,032,023.93
  5. Step 5: Solve for x
    x = 4,223,032,023.93/88,120.86
  6. Step 6: Final answer
    x = 47,923.18

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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.