Home / 87,634.60-131,451.90-40,978.60

Finding the Fourth Proportional to 87,634.60, 131,451.90 and 40,978.60

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Solution

The fourth proportional to 87,634.60, 131,451.90 and 40,978.60 is: 61,467.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,634.60 : 131,451.90 = 40,978.60 : x
  2. Step 2: Convert to fraction form
    87,634.60/131,451.90 = 40,978.60/x
  3. Step 3: Cross multiply
    87,634.60x = 131,451.90 × 40,978.60
  4. Step 4: Simplify right side
    87,634.60x = 5,386,714,829.34
  5. Step 5: Solve for x
    x = 5,386,714,829.34/87,634.60
  6. Step 6: Final answer
    x = 61,467.90

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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.