Home / 78,468.57-117,701.83-19,304.75

Finding the Fourth Proportional to 78,468.57, 117,701.83 and 19,304.75

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Solution

The fourth proportional to 78,468.57, 117,701.83 and 19,304.75 is: 28,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,468.57 : 117,701.83 = 19,304.75 : x
  2. Step 2: Convert to fraction form
    78,468.57/117,701.83 = 19,304.75/x
  3. Step 3: Cross multiply
    78,468.57x = 117,701.83 × 19,304.75
  4. Step 4: Simplify right side
    78,468.57x = 2,272,204,402.69
  5. Step 5: Solve for x
    x = 2,272,204,402.69/78,468.57
  6. Step 6: Final answer
    x = 28,956.87

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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.