Home / 82,721.60-124,021.92-26,529.72

Finding the Fourth Proportional to 82,721.60, 124,021.92 and 26,529.72

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Solution

The fourth proportional to 82,721.60, 124,021.92 and 26,529.72 is: 39,775.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,721.60 : 124,021.92 = 26,529.72 : x
  2. Step 2: Convert to fraction form
    82,721.60/124,021.92 = 26,529.72/x
  3. Step 3: Cross multiply
    82,721.60x = 124,021.92 × 26,529.72
  4. Step 4: Simplify right side
    82,721.60x = 3,290,266,811.46
  5. Step 5: Solve for x
    x = 3,290,266,811.46/82,721.60
  6. Step 6: Final answer
    x = 39,775.18

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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.