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Finding the Fourth Proportional to 69,276.60, 103,914.90 and 52,687.80

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Solution

The fourth proportional to 69,276.60, 103,914.90 and 52,687.80 is: 79,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,276.60 : 103,914.90 = 52,687.80 : x
  2. Step 2: Convert to fraction form
    69,276.60/103,914.90 = 52,687.80/x
  3. Step 3: Cross multiply
    69,276.60x = 103,914.90 × 52,687.80
  4. Step 4: Simplify right side
    69,276.60x = 5,475,047,468.22
  5. Step 5: Solve for x
    x = 5,475,047,468.22/69,276.60
  6. Step 6: Final answer
    x = 79,031.70

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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.