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Finding the Fourth Proportional to 83,750.60, 125,625.90 and 31,149.20

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Solution

The fourth proportional to 83,750.60, 125,625.90 and 31,149.20 is: 46,723.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,750.60 : 125,625.90 = 31,149.20 : x
  2. Step 2: Convert to fraction form
    83,750.60/125,625.90 = 31,149.20/x
  3. Step 3: Cross multiply
    83,750.60x = 125,625.90 × 31,149.20
  4. Step 4: Simplify right side
    83,750.60x = 3,913,146,284.28
  5. Step 5: Solve for x
    x = 3,913,146,284.28/83,750.60
  6. Step 6: Final answer
    x = 46,723.80

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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.