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Finding the Fourth Proportional to 69,087.60, 103,631.40 and 52,498.80

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Solution

The fourth proportional to 69,087.60, 103,631.40 and 52,498.80 is: 78,748.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,087.60 : 103,631.40 = 52,498.80 : x
  2. Step 2: Convert to fraction form
    69,087.60/103,631.40 = 52,498.80/x
  3. Step 3: Cross multiply
    69,087.60x = 103,631.40 × 52,498.80
  4. Step 4: Simplify right side
    69,087.60x = 5,440,524,142.32
  5. Step 5: Solve for x
    x = 5,440,524,142.32/69,087.60
  6. Step 6: Final answer
    x = 78,748.20

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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.