Home / 81,132.24-111,949.44-45,320.40

Finding the Fourth Proportional to 81,132.24, 111,949.44 and 45,320.40

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Solution

The fourth proportional to 81,132.24, 111,949.44 and 45,320.40 is: 62,534.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,132.24 : 111,949.44 = 45,320.40 : x
  2. Step 2: Convert to fraction form
    81,132.24/111,949.44 = 45,320.40/x
  3. Step 3: Cross multiply
    81,132.24x = 111,949.44 × 45,320.40
  4. Step 4: Simplify right side
    81,132.24x = 5,073,593,400.58
  5. Step 5: Solve for x
    x = 5,073,593,400.58/81,132.24
  6. Step 6: Final answer
    x = 62,534.86

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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.