Home / 82,721.12-124,021.17-26,529.23

Finding the Fourth Proportional to 82,721.12, 124,021.17 and 26,529.23

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Solution

The fourth proportional to 82,721.12, 124,021.17 and 26,529.23 is: 39,774.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,721.12 : 124,021.17 = 26,529.23 : x
  2. Step 2: Convert to fraction form
    82,721.12/124,021.17 = 26,529.23/x
  3. Step 3: Cross multiply
    82,721.12x = 124,021.17 × 26,529.23
  4. Step 4: Simplify right side
    82,721.12x = 3,290,186,453.85
  5. Step 5: Solve for x
    x = 3,290,186,453.85/82,721.12
  6. Step 6: Final answer
    x = 39,774.45

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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.