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Finding the Fourth Proportional to 87,365.80, 131,048.70 and 52,287.40

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Solution

The fourth proportional to 87,365.80, 131,048.70 and 52,287.40 is: 78,431.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,365.80 : 131,048.70 = 52,287.40 : x
  2. Step 2: Convert to fraction form
    87,365.80/131,048.70 = 52,287.40/x
  3. Step 3: Cross multiply
    87,365.80x = 131,048.70 × 52,287.40
  4. Step 4: Simplify right side
    87,365.80x = 6,852,195,796.38
  5. Step 5: Solve for x
    x = 6,852,195,796.38/87,365.80
  6. Step 6: Final answer
    x = 78,431.10

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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.