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Finding the Fourth Proportional to 83,268.98, 124,944.45 and 38,889.29

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Solution

The fourth proportional to 83,268.98, 124,944.45 and 38,889.29 is: 58,353.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,268.98 : 124,944.45 = 38,889.29 : x
  2. Step 2: Convert to fraction form
    83,268.98/124,944.45 = 38,889.29/x
  3. Step 3: Cross multiply
    83,268.98x = 124,944.45 × 38,889.29
  4. Step 4: Simplify right side
    83,268.98x = 4,859,000,949.94
  5. Step 5: Solve for x
    x = 4,859,000,949.94/83,268.98
  6. Step 6: Final answer
    x = 58,353.07

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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.