Home / 78,286.44-117,442.70-25,681.80

Finding the Fourth Proportional to 78,286.44, 117,442.70 and 25,681.80

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Solution

The fourth proportional to 78,286.44, 117,442.70 and 25,681.80 is: 38,526.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,286.44 : 117,442.70 = 25,681.80 : x
  2. Step 2: Convert to fraction form
    78,286.44/117,442.70 = 25,681.80/x
  3. Step 3: Cross multiply
    78,286.44x = 117,442.70 × 25,681.80
  4. Step 4: Simplify right side
    78,286.44x = 3,016,139,932.86
  5. Step 5: Solve for x
    x = 3,016,139,932.86/78,286.44
  6. Step 6: Final answer
    x = 38,526.98

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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.