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Finding the Fourth Proportional to 75,221.79, 103,807.35 and 41,229.60

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Solution

The fourth proportional to 75,221.79, 103,807.35 and 41,229.60 is: 56,897.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,221.79 : 103,807.35 = 41,229.60 : x
  2. Step 2: Convert to fraction form
    75,221.79/103,807.35 = 41,229.60/x
  3. Step 3: Cross multiply
    75,221.79x = 103,807.35 × 41,229.60
  4. Step 4: Simplify right side
    75,221.79x = 4,279,935,517.56
  5. Step 5: Solve for x
    x = 4,279,935,517.56/75,221.79
  6. Step 6: Final answer
    x = 56,897.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.