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Finding the Fourth Proportional to 79,119.40, 118,680.30 and 25,811.14

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Solution

The fourth proportional to 79,119.40, 118,680.30 and 25,811.14 is: 38,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,119.40 : 118,680.30 = 25,811.14 : x
  2. Step 2: Convert to fraction form
    79,119.40/118,680.30 = 25,811.14/x
  3. Step 3: Cross multiply
    79,119.40x = 118,680.30 × 25,811.14
  4. Step 4: Simplify right side
    79,119.40x = 3,063,273,838.54
  5. Step 5: Solve for x
    x = 3,063,273,838.54/79,119.40
  6. Step 6: Final answer
    x = 38,717.10

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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.