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Finding the Fourth Proportional to 52,520.80, 78,838.80 and 29,135.20

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Solution

The fourth proportional to 52,520.80, 78,838.80 and 29,135.20 is: 43,734.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,520.80 : 78,838.80 = 29,135.20 : x
  2. Step 2: Convert to fraction form
    52,520.80/78,838.80 = 29,135.20/x
  3. Step 3: Cross multiply
    52,520.80x = 78,838.80 × 29,135.20
  4. Step 4: Simplify right side
    52,520.80x = 2,296,984,205.76
  5. Step 5: Solve for x
    x = 2,296,984,205.76/52,520.80
  6. Step 6: Final answer
    x = 43,734.75

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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.