Home / 78,839.24-118,289.10-32,131.40

Finding the Fourth Proportional to 78,839.24, 118,289.10 and 32,131.40

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Solution

The fourth proportional to 78,839.24, 118,289.10 and 32,131.40 is: 48,209.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,839.24 : 118,289.10 = 32,131.40 : x
  2. Step 2: Convert to fraction form
    78,839.24/118,289.10 = 32,131.40/x
  3. Step 3: Cross multiply
    78,839.24x = 118,289.10 × 32,131.40
  4. Step 4: Simplify right side
    78,839.24x = 3,800,794,387.74
  5. Step 5: Solve for x
    x = 3,800,794,387.74/78,839.24
  6. Step 6: Final answer
    x = 48,209.42

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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.