Home / 81,209.28-111,966.35-52,480.31

Finding the Fourth Proportional to 81,209.28, 111,966.35 and 52,480.31

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Solution

The fourth proportional to 81,209.28, 111,966.35 and 52,480.31 is: 72,356.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,209.28 : 111,966.35 = 52,480.31 : x
  2. Step 2: Convert to fraction form
    81,209.28/111,966.35 = 52,480.31/x
  3. Step 3: Cross multiply
    81,209.28x = 111,966.35 × 52,480.31
  4. Step 4: Simplify right side
    81,209.28x = 5,876,028,230.54
  5. Step 5: Solve for x
    x = 5,876,028,230.54/81,209.28
  6. Step 6: Final answer
    x = 72,356.61

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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.