Home / 81,260.20-111,820.26-71,851.24

Finding the Fourth Proportional to 81,260.20, 111,820.26 and 71,851.24

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Solution

The fourth proportional to 81,260.20, 111,820.26 and 71,851.24 is: 98,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,260.20 : 111,820.26 = 71,851.24 : x
  2. Step 2: Convert to fraction form
    81,260.20/111,820.26 = 71,851.24/x
  3. Step 3: Cross multiply
    81,260.20x = 111,820.26 × 71,851.24
  4. Step 4: Simplify right side
    81,260.20x = 8,034,424,338.12
  5. Step 5: Solve for x
    x = 8,034,424,338.12/81,260.20
  6. Step 6: Final answer
    x = 98,872.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.