Home / 78,322.89-117,504.36-25,732.83

Finding the Fourth Proportional to 78,322.89, 117,504.36 and 25,732.83

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Solution

The fourth proportional to 78,322.89, 117,504.36 and 25,732.83 is: 38,605.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,322.89 : 117,504.36 = 25,732.83 : x
  2. Step 2: Convert to fraction form
    78,322.89/117,504.36 = 25,732.83/x
  3. Step 3: Cross multiply
    78,322.89x = 117,504.36 × 25,732.83
  4. Step 4: Simplify right side
    78,322.89x = 3,023,719,720.14
  5. Step 5: Solve for x
    x = 3,023,719,720.14/78,322.89
  6. Step 6: Final answer
    x = 38,605.82

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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.