Home / 78,728.97-108,648.03-48,534.24

Finding the Fourth Proportional to 78,728.97, 108,648.03 and 48,534.24

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Solution

The fourth proportional to 78,728.97, 108,648.03 and 48,534.24 is: 66,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,728.97 : 108,648.03 = 48,534.24 : x
  2. Step 2: Convert to fraction form
    78,728.97/108,648.03 = 48,534.24/x
  3. Step 3: Cross multiply
    78,728.97x = 108,648.03 × 48,534.24
  4. Step 4: Simplify right side
    78,728.97x = 5,273,149,563.55
  5. Step 5: Solve for x
    x = 5,273,149,563.55/78,728.97
  6. Step 6: Final answer
    x = 66,978.52

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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.