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Finding the Fourth Proportional to 83,987.70, 125,367 and 74,023.44

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Solution

The fourth proportional to 83,987.70, 125,367 and 74,023.44 is: 110,493.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,987.70 : 125,367 = 74,023.44 : x
  2. Step 2: Convert to fraction form
    83,987.70/125,367 = 74,023.44/x
  3. Step 3: Cross multiply
    83,987.70x = 125,367 × 74,023.44
  4. Step 4: Simplify right side
    83,987.70x = 9,280,096,602.48
  5. Step 5: Solve for x
    x = 9,280,096,602.48/83,987.70
  6. Step 6: Final answer
    x = 110,493.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.