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Finding the Fourth Proportional to 79,482.30, 109,695.11 and 47,668.70

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Solution

The fourth proportional to 79,482.30, 109,695.11 and 47,668.70 is: 65,788.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,482.30 : 109,695.11 = 47,668.70 : x
  2. Step 2: Convert to fraction form
    79,482.30/109,695.11 = 47,668.70/x
  3. Step 3: Cross multiply
    79,482.30x = 109,695.11 × 47,668.70
  4. Step 4: Simplify right side
    79,482.30x = 5,229,023,290.06
  5. Step 5: Solve for x
    x = 5,229,023,290.06/79,482.30
  6. Step 6: Final answer
    x = 65,788.53

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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.