Home / 78,432.52-117,663.36-25,844.08

Finding the Fourth Proportional to 78,432.52, 117,663.36 and 25,844.08

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Solution

The fourth proportional to 78,432.52, 117,663.36 and 25,844.08 is: 38,770.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,432.52 : 117,663.36 = 25,844.08 : x
  2. Step 2: Convert to fraction form
    78,432.52/117,663.36 = 25,844.08/x
  3. Step 3: Cross multiply
    78,432.52x = 117,663.36 × 25,844.08
  4. Step 4: Simplify right side
    78,432.52x = 3,040,901,288.91
  5. Step 5: Solve for x
    x = 3,040,901,288.91/78,432.52
  6. Step 6: Final answer
    x = 38,770.92

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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.