Home / 81,020.28-111,813.52-45,217.20

Finding the Fourth Proportional to 81,020.28, 111,813.52 and 45,217.20

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Solution

The fourth proportional to 81,020.28, 111,813.52 and 45,217.20 is: 62,402.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,020.28 : 111,813.52 = 45,217.20 : x
  2. Step 2: Convert to fraction form
    81,020.28/111,813.52 = 45,217.20/x
  3. Step 3: Cross multiply
    81,020.28x = 111,813.52 × 45,217.20
  4. Step 4: Simplify right side
    81,020.28x = 5,055,894,296.54
  5. Step 5: Solve for x
    x = 5,055,894,296.54/81,020.28
  6. Step 6: Final answer
    x = 62,402.82

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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.