Home / 78,351.10-117,534.85-25,760.58

Finding the Fourth Proportional to 78,351.10, 117,534.85 and 25,760.58

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Solution

The fourth proportional to 78,351.10, 117,534.85 and 25,760.58 is: 38,643.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,351.10 : 117,534.85 = 25,760.58 : x
  2. Step 2: Convert to fraction form
    78,351.10/117,534.85 = 25,760.58/x
  3. Step 3: Cross multiply
    78,351.10x = 117,534.85 × 25,760.58
  4. Step 4: Simplify right side
    78,351.10x = 3,027,766,062.19
  5. Step 5: Solve for x
    x = 3,027,766,062.19/78,351.10
  6. Step 6: Final answer
    x = 38,643.57

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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.