Home / 81,330.80-121,970.28-41,882.72

Finding the Fourth Proportional to 81,330.80, 121,970.28 and 41,882.72

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Solution

The fourth proportional to 81,330.80, 121,970.28 and 41,882.72 is: 62,810.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,330.80 : 121,970.28 = 41,882.72 : x
  2. Step 2: Convert to fraction form
    81,330.80/121,970.28 = 41,882.72/x
  3. Step 3: Cross multiply
    81,330.80x = 121,970.28 × 41,882.72
  4. Step 4: Simplify right side
    81,330.80x = 5,108,447,085.56
  5. Step 5: Solve for x
    x = 5,108,447,085.56/81,330.80
  6. Step 6: Final answer
    x = 62,810.73

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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.