Home / 81,732.12-122,428.08-52,002.69

Finding the Fourth Proportional to 81,732.12, 122,428.08 and 52,002.69

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Solution

The fourth proportional to 81,732.12, 122,428.08 and 52,002.69 is: 77,895.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,732.12 : 122,428.08 = 52,002.69 : x
  2. Step 2: Convert to fraction form
    81,732.12/122,428.08 = 52,002.69/x
  3. Step 3: Cross multiply
    81,732.12x = 122,428.08 × 52,002.69
  4. Step 4: Simplify right side
    81,732.12x = 6,366,589,491.54
  5. Step 5: Solve for x
    x = 6,366,589,491.54/81,732.12
  6. Step 6: Final answer
    x = 77,895.81

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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.