Home / 81,261.20-111,821.64-71,852.24

Finding the Fourth Proportional to 81,261.20, 111,821.64 and 71,852.24

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Solution

The fourth proportional to 81,261.20, 111,821.64 and 71,852.24 is: 98,874.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,261.20 : 111,821.64 = 71,852.24 : x
  2. Step 2: Convert to fraction form
    81,261.20/111,821.64 = 71,852.24/x
  3. Step 3: Cross multiply
    81,261.20x = 111,821.64 × 71,852.24
  4. Step 4: Simplify right side
    81,261.20x = 8,034,635,314.47
  5. Step 5: Solve for x
    x = 8,034,635,314.47/81,261.20
  6. Step 6: Final answer
    x = 98,874.19

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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.