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Finding the Fourth Proportional to 87,116.80, 130,675.20 and 53,728.60

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Solution

The fourth proportional to 87,116.80, 130,675.20 and 53,728.60 is: 80,592.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,116.80 : 130,675.20 = 53,728.60 : x
  2. Step 2: Convert to fraction form
    87,116.80/130,675.20 = 53,728.60/x
  3. Step 3: Cross multiply
    87,116.80x = 130,675.20 × 53,728.60
  4. Step 4: Simplify right side
    87,116.80x = 7,020,995,550.72
  5. Step 5: Solve for x
    x = 7,020,995,550.72/87,116.80
  6. Step 6: Final answer
    x = 80,592.90

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1.5x scale

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.