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Finding the Fourth Proportional to 71,400.70, 107,087.28 and 52,505.02

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Solution

The fourth proportional to 71,400.70, 107,087.28 and 52,505.02 is: 78,747.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.70 : 107,087.28 = 52,505.02 : x
  2. Step 2: Convert to fraction form
    71,400.70/107,087.28 = 52,505.02/x
  3. Step 3: Cross multiply
    71,400.70x = 107,087.28 × 52,505.02
  4. Step 4: Simplify right side
    71,400.70x = 5,622,619,778.15
  5. Step 5: Solve for x
    x = 5,622,619,778.15/71,400.70
  6. Step 6: Final answer
    x = 78,747.40

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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.