Home / 81,004.38-121,505.55-27,695.82

Finding the Fourth Proportional to 81,004.38, 121,505.55 and 27,695.82

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Solution

The fourth proportional to 81,004.38, 121,505.55 and 27,695.82 is: 41,543.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,004.38 : 121,505.55 = 27,695.82 : x
  2. Step 2: Convert to fraction form
    81,004.38/121,505.55 = 27,695.82/x
  3. Step 3: Cross multiply
    81,004.38x = 121,505.55 × 27,695.82
  4. Step 4: Simplify right side
    81,004.38x = 3,365,195,841.80
  5. Step 5: Solve for x
    x = 3,365,195,841.80/81,004.38
  6. Step 6: Final answer
    x = 41,543.38

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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.