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Finding the Fourth Proportional to 83,100, 124,599.87 and 38,736.71

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Solution

The fourth proportional to 83,100, 124,599.87 and 38,736.71 is: 58,081.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,100 : 124,599.87 = 38,736.71 : x
  2. Step 2: Convert to fraction form
    83,100/124,599.87 = 38,736.71/x
  3. Step 3: Cross multiply
    83,100x = 124,599.87 × 38,736.71
  4. Step 4: Simplify right side
    83,100x = 4,826,589,030.23
  5. Step 5: Solve for x
    x = 4,826,589,030.23/83,100
  6. Step 6: Final answer
    x = 58,081.70

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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.