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Finding the Fourth Proportional to 79,859.67, 119,812.61 and 25,823.20

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Solution

The fourth proportional to 79,859.67, 119,812.61 and 25,823.20 is: 38,742.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,859.67 : 119,812.61 = 25,823.20 : x
  2. Step 2: Convert to fraction form
    79,859.67/119,812.61 = 25,823.20/x
  3. Step 3: Cross multiply
    79,859.67x = 119,812.61 × 25,823.20
  4. Step 4: Simplify right side
    79,859.67x = 3,093,944,543.39
  5. Step 5: Solve for x
    x = 3,093,944,543.39/79,859.67
  6. Step 6: Final answer
    x = 38,742.27

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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.