Home / 78,831.90-108,787.14-43,023.42

Finding the Fourth Proportional to 78,831.90, 108,787.14 and 43,023.42

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Solution

The fourth proportional to 78,831.90, 108,787.14 and 43,023.42 is: 59,371.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,831.90 : 108,787.14 = 43,023.42 : x
  2. Step 2: Convert to fraction form
    78,831.90/108,787.14 = 43,023.42/x
  3. Step 3: Cross multiply
    78,831.90x = 108,787.14 × 43,023.42
  4. Step 4: Simplify right side
    78,831.90x = 4,680,394,814.82
  5. Step 5: Solve for x
    x = 4,680,394,814.82/78,831.90
  6. Step 6: Final answer
    x = 59,371.84

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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.