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Finding the Fourth Proportional to 87,314.40, 130,798.80 and 52,149.60

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Solution

The fourth proportional to 87,314.40, 130,798.80 and 52,149.60 is: 78,121.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,314.40 : 130,798.80 = 52,149.60 : x
  2. Step 2: Convert to fraction form
    87,314.40/130,798.80 = 52,149.60/x
  3. Step 3: Cross multiply
    87,314.40x = 130,798.80 × 52,149.60
  4. Step 4: Simplify right side
    87,314.40x = 6,821,105,100.48
  5. Step 5: Solve for x
    x = 6,821,105,100.48/87,314.40
  6. Step 6: Final answer
    x = 78,121.19

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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.