Home / 81,017.56-121,545.92-30,417.04

Finding the Fourth Proportional to 81,017.56, 121,545.92 and 30,417.04

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Solution

The fourth proportional to 81,017.56, 121,545.92 and 30,417.04 is: 45,632.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,017.56 : 121,545.92 = 30,417.04 : x
  2. Step 2: Convert to fraction form
    81,017.56/121,545.92 = 30,417.04/x
  3. Step 3: Cross multiply
    81,017.56x = 121,545.92 × 30,417.04
  4. Step 4: Simplify right side
    81,017.56x = 3,697,067,110.48
  5. Step 5: Solve for x
    x = 3,697,067,110.48/81,017.56
  6. Step 6: Final answer
    x = 45,632.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.