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Finding the Fourth Proportional to 78,843.30, 118,070.55 and 52,404.90

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Solution

The fourth proportional to 78,843.30, 118,070.55 and 52,404.90 is: 78,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,843.30 : 118,070.55 = 52,404.90 : x
  2. Step 2: Convert to fraction form
    78,843.30/118,070.55 = 52,404.90/x
  3. Step 3: Cross multiply
    78,843.30x = 118,070.55 × 52,404.90
  4. Step 4: Simplify right side
    78,843.30x = 6,187,475,365.70
  5. Step 5: Solve for x
    x = 6,187,475,365.70/78,843.30
  6. Step 6: Final answer
    x = 78,478.14

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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.