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Finding the Fourth Proportional to 66,887.16, 100,369.80 and 25,337.40

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Solution

The fourth proportional to 66,887.16, 100,369.80 and 25,337.40 is: 38,020.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,887.16 : 100,369.80 = 25,337.40 : x
  2. Step 2: Convert to fraction form
    66,887.16/100,369.80 = 25,337.40/x
  3. Step 3: Cross multiply
    66,887.16x = 100,369.80 × 25,337.40
  4. Step 4: Simplify right side
    66,887.16x = 2,543,109,770.52
  5. Step 5: Solve for x
    x = 2,543,109,770.52/66,887.16
  6. Step 6: Final answer
    x = 38,020.90

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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.