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Finding the Fourth Proportional to 65,559.39, 90,471 and 36,876.88

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Solution

The fourth proportional to 65,559.39, 90,471 and 36,876.88 is: 50,889.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,559.39 : 90,471 = 36,876.88 : x
  2. Step 2: Convert to fraction form
    65,559.39/90,471 = 36,876.88/x
  3. Step 3: Cross multiply
    65,559.39x = 90,471 × 36,876.88
  4. Step 4: Simplify right side
    65,559.39x = 3,336,288,210.48
  5. Step 5: Solve for x
    x = 3,336,288,210.48/65,559.39
  6. Step 6: Final answer
    x = 50,889.56

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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.