Home / 78,245.28-117,367.38-31,497.48

Finding the Fourth Proportional to 78,245.28, 117,367.38 and 31,497.48

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Solution

The fourth proportional to 78,245.28, 117,367.38 and 31,497.48 is: 47,246.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,245.28 : 117,367.38 = 31,497.48 : x
  2. Step 2: Convert to fraction form
    78,245.28/117,367.38 = 31,497.48/x
  3. Step 3: Cross multiply
    78,245.28x = 117,367.38 × 31,497.48
  4. Step 4: Simplify right side
    78,245.28x = 3,696,776,704.20
  5. Step 5: Solve for x
    x = 3,696,776,704.20/78,245.28
  6. Step 6: Final answer
    x = 47,246.00

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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.