Home / 90,892.47-136,400.99-31,728.15

Finding the Fourth Proportional to 90,892.47, 136,400.99 and 31,728.15

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Solution

The fourth proportional to 90,892.47, 136,400.99 and 31,728.15 is: 47,613.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,892.47 : 136,400.99 = 31,728.15 : x
  2. Step 2: Convert to fraction form
    90,892.47/136,400.99 = 31,728.15/x
  3. Step 3: Cross multiply
    90,892.47x = 136,400.99 × 31,728.15
  4. Step 4: Simplify right side
    90,892.47x = 4,327,751,070.87
  5. Step 5: Solve for x
    x = 4,327,751,070.87/90,892.47
  6. Step 6: Final answer
    x = 47,613.97

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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.