Home / 78,744.11-117,982.52-47,513.75

Finding the Fourth Proportional to 78,744.11, 117,982.52 and 47,513.75

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Solution

The fourth proportional to 78,744.11, 117,982.52 and 47,513.75 is: 71,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,744.11 : 117,982.52 = 47,513.75 : x
  2. Step 2: Convert to fraction form
    78,744.11/117,982.52 = 47,513.75/x
  3. Step 3: Cross multiply
    78,744.11x = 117,982.52 × 47,513.75
  4. Step 4: Simplify right side
    78,744.11x = 5,605,791,722.08
  5. Step 5: Solve for x
    x = 5,605,791,722.08/78,744.11
  6. Step 6: Final answer
    x = 71,189.98

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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.