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Finding the Fourth Proportional to 83,615.70, 125,442.70 and 36,238.75

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Solution

The fourth proportional to 83,615.70, 125,442.70 and 36,238.75 is: 54,366.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,615.70 : 125,442.70 = 36,238.75 : x
  2. Step 2: Convert to fraction form
    83,615.70/125,442.70 = 36,238.75/x
  3. Step 3: Cross multiply
    83,615.70x = 125,442.70 × 36,238.75
  4. Step 4: Simplify right side
    83,615.70x = 4,545,886,240.42
  5. Step 5: Solve for x
    x = 4,545,886,240.42/83,615.70
  6. Step 6: Final answer
    x = 54,366.42

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1.5x scale

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.