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Finding the Fourth Proportional to 87,462.40, 131,042.40 and 40,619.20

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Solution

The fourth proportional to 87,462.40, 131,042.40 and 40,619.20 is: 60,858.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,462.40 : 131,042.40 = 40,619.20 : x
  2. Step 2: Convert to fraction form
    87,462.40/131,042.40 = 40,619.20/x
  3. Step 3: Cross multiply
    87,462.40x = 131,042.40 × 40,619.20
  4. Step 4: Simplify right side
    87,462.40x = 5,322,837,454.08
  5. Step 5: Solve for x
    x = 5,322,837,454.08/87,462.40
  6. Step 6: Final answer
    x = 60,858.58

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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.