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Finding the Fourth Proportional to 87,632.60, 131,448.90 and 40,976.60

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Solution

The fourth proportional to 87,632.60, 131,448.90 and 40,976.60 is: 61,464.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,632.60 : 131,448.90 = 40,976.60 : x
  2. Step 2: Convert to fraction form
    87,632.60/131,448.90 = 40,976.60/x
  3. Step 3: Cross multiply
    87,632.60x = 131,448.90 × 40,976.60
  4. Step 4: Simplify right side
    87,632.60x = 5,386,328,995.74
  5. Step 5: Solve for x
    x = 5,386,328,995.74/87,632.60
  6. Step 6: Final answer
    x = 61,464.90

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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.