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Finding the Fourth Proportional to 83,893.08, 125,839.64 and 69,070.86

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Solution

The fourth proportional to 83,893.08, 125,839.64 and 69,070.86 is: 103,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,893.08 : 125,839.64 = 69,070.86 : x
  2. Step 2: Convert to fraction form
    83,893.08/125,839.64 = 69,070.86/x
  3. Step 3: Cross multiply
    83,893.08x = 125,839.64 × 69,070.86
  4. Step 4: Simplify right side
    83,893.08x = 8,691,851,811.54
  5. Step 5: Solve for x
    x = 8,691,851,811.54/83,893.08
  6. Step 6: Final answer
    x = 103,606.30

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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.