Home / 90,116.15-124,358.36-49,831.61

Finding the Fourth Proportional to 90,116.15, 124,358.36 and 49,831.61

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Solution

The fourth proportional to 90,116.15, 124,358.36 and 49,831.61 is: 68,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,116.15 : 124,358.36 = 49,831.61 : x
  2. Step 2: Convert to fraction form
    90,116.15/124,358.36 = 49,831.61/x
  3. Step 3: Cross multiply
    90,116.15x = 124,358.36 × 49,831.61
  4. Step 4: Simplify right side
    90,116.15x = 6,196,976,424.81
  5. Step 5: Solve for x
    x = 6,196,976,424.81/90,116.15
  6. Step 6: Final answer
    x = 68,766.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.