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Finding the Fourth Proportional to 79,332.03, 109,481.63 and 47,494.78

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Solution

The fourth proportional to 79,332.03, 109,481.63 and 47,494.78 is: 65,544.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,332.03 : 109,481.63 = 47,494.78 : x
  2. Step 2: Convert to fraction form
    79,332.03/109,481.63 = 47,494.78/x
  3. Step 3: Cross multiply
    79,332.03x = 109,481.63 × 47,494.78
  4. Step 4: Simplify right side
    79,332.03x = 5,199,805,419.71
  5. Step 5: Solve for x
    x = 5,199,805,419.71/79,332.03
  6. Step 6: Final answer
    x = 65,544.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.