Home / 90,116.10-124,358.40-49,831.56

Finding the Fourth Proportional to 90,116.10, 124,358.40 and 49,831.56

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Solution

The fourth proportional to 90,116.10, 124,358.40 and 49,831.56 is: 68,766.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,116.10 : 124,358.40 = 49,831.56 : x
  2. Step 2: Convert to fraction form
    90,116.10/124,358.40 = 49,831.56/x
  3. Step 3: Cross multiply
    90,116.10x = 124,358.40 × 49,831.56
  4. Step 4: Simplify right side
    90,116.10x = 6,196,973,071.10
  5. Step 5: Solve for x
    x = 6,196,973,071.10/90,116.10
  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.