Home / 82,757.12-124,061.85-68,831.39

Finding the Fourth Proportional to 82,757.12, 124,061.85 and 68,831.39

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Solution

The fourth proportional to 82,757.12, 124,061.85 and 68,831.39 is: 103,185.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,757.12 : 124,061.85 = 68,831.39 : x
  2. Step 2: Convert to fraction form
    82,757.12/124,061.85 = 68,831.39/x
  3. Step 3: Cross multiply
    82,757.12x = 124,061.85 × 68,831.39
  4. Step 4: Simplify right side
    82,757.12x = 8,539,349,581.47
  5. Step 5: Solve for x
    x = 8,539,349,581.47/82,757.12
  6. Step 6: Final answer
    x = 103,185.68

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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.