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Finding the Fourth Proportional to 87,792.40, 131,656.20 and 43,404.40

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Solution

The fourth proportional to 87,792.40, 131,656.20 and 43,404.40 is: 65,090.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,792.40 : 131,656.20 = 43,404.40 : x
  2. Step 2: Convert to fraction form
    87,792.40/131,656.20 = 43,404.40/x
  3. Step 3: Cross multiply
    87,792.40x = 131,656.20 × 43,404.40
  4. Step 4: Simplify right side
    87,792.40x = 5,714,458,367.28
  5. Step 5: Solve for x
    x = 5,714,458,367.28/87,792.40
  6. Step 6: Final answer
    x = 65,090.58

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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.