Home / 78,479.64-117,707.94-25,882.38

Finding the Fourth Proportional to 78,479.64, 117,707.94 and 25,882.38

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Solution

The fourth proportional to 78,479.64, 117,707.94 and 25,882.38 is: 38,819.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,479.64 : 117,707.94 = 25,882.38 : x
  2. Step 2: Convert to fraction form
    78,479.64/117,707.94 = 25,882.38/x
  3. Step 3: Cross multiply
    78,479.64x = 117,707.94 × 25,882.38
  4. Step 4: Simplify right side
    78,479.64x = 3,046,561,632.10
  5. Step 5: Solve for x
    x = 3,046,561,632.10/78,479.64
  6. Step 6: Final answer
    x = 38,819.77

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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.