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Finding the Fourth Proportional to 79,154.52, 109,229.63 and 47,340.96

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Solution

The fourth proportional to 79,154.52, 109,229.63 and 47,340.96 is: 65,328.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,154.52 : 109,229.63 = 47,340.96 : x
  2. Step 2: Convert to fraction form
    79,154.52/109,229.63 = 47,340.96/x
  3. Step 3: Cross multiply
    79,154.52x = 109,229.63 × 47,340.96
  4. Step 4: Simplify right side
    79,154.52x = 5,171,035,307.94
  5. Step 5: Solve for x
    x = 5,171,035,307.94/79,154.52
  6. Step 6: Final answer
    x = 65,328.36

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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.