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Finding the Fourth Proportional to 71,815.38, 107,818.50 and 61,352.64

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Solution

The fourth proportional to 71,815.38, 107,818.50 and 61,352.64 is: 92,110.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,815.38 : 107,818.50 = 61,352.64 : x
  2. Step 2: Convert to fraction form
    71,815.38/107,818.50 = 61,352.64/x
  3. Step 3: Cross multiply
    71,815.38x = 107,818.50 × 61,352.64
  4. Step 4: Simplify right side
    71,815.38x = 6,614,949,615.84
  5. Step 5: Solve for x
    x = 6,614,949,615.84/71,815.38
  6. Step 6: Final answer
    x = 92,110.49

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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.