Home / 78,222.92-117,322.50-25,631.24

Finding the Fourth Proportional to 78,222.92, 117,322.50 and 25,631.24

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Solution

The fourth proportional to 78,222.92, 117,322.50 and 25,631.24 is: 38,442.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,222.92 : 117,322.50 = 25,631.24 : x
  2. Step 2: Convert to fraction form
    78,222.92/117,322.50 = 25,631.24/x
  3. Step 3: Cross multiply
    78,222.92x = 117,322.50 × 25,631.24
  4. Step 4: Simplify right side
    78,222.92x = 3,007,121,154.90
  5. Step 5: Solve for x
    x = 3,007,121,154.90/78,222.92
  6. Step 6: Final answer
    x = 38,442.97

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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.