Home / 78,831.50-108,789.77-43,023.80

Finding the Fourth Proportional to 78,831.50, 108,789.77 and 43,023.80

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Solution

The fourth proportional to 78,831.50, 108,789.77 and 43,023.80 is: 59,374.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.50 : 108,789.77 = 43,023.80 : x
  2. Step 2: Convert to fraction form
    78,831.50/108,789.77 = 43,023.80/x
  3. Step 3: Cross multiply
    78,831.50x = 108,789.77 × 43,023.80
  4. Step 4: Simplify right side
    78,831.50x = 4,680,549,306.53
  5. Step 5: Solve for x
    x = 4,680,549,306.53/78,831.50
  6. Step 6: Final answer
    x = 59,374.10

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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.