Home / 78,831.40-108,789.72-44,844.78

Finding the Fourth Proportional to 78,831.40, 108,789.72 and 44,844.78

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Solution

The fourth proportional to 78,831.40, 108,789.72 and 44,844.78 is: 61,887.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.40 : 108,789.72 = 44,844.78 : x
  2. Step 2: Convert to fraction form
    78,831.40/108,789.72 = 44,844.78/x
  3. Step 3: Cross multiply
    78,831.40x = 108,789.72 × 44,844.78
  4. Step 4: Simplify right side
    78,831.40x = 4,878,651,059.66
  5. Step 5: Solve for x
    x = 4,878,651,059.66/78,831.40
  6. Step 6: Final answer
    x = 61,887.15

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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.