Home / 78,789.15-118,178.73-32,040.81

Finding the Fourth Proportional to 78,789.15, 118,178.73 and 32,040.81

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Solution

The fourth proportional to 78,789.15, 118,178.73 and 32,040.81 is: 48,059.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,789.15 : 118,178.73 = 32,040.81 : x
  2. Step 2: Convert to fraction form
    78,789.15/118,178.73 = 32,040.81/x
  3. Step 3: Cross multiply
    78,789.15x = 118,178.73 × 32,040.81
  4. Step 4: Simplify right side
    78,789.15x = 3,786,542,233.97
  5. Step 5: Solve for x
    x = 3,786,542,233.97/78,789.15
  6. Step 6: Final answer
    x = 48,059.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.