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Finding the Fourth Proportional to 79,319.80, 118,821.03 and 47,712.42

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Solution

The fourth proportional to 79,319.80, 118,821.03 and 47,712.42 is: 71,473.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,319.80 : 118,821.03 = 47,712.42 : x
  2. Step 2: Convert to fraction form
    79,319.80/118,821.03 = 47,712.42/x
  3. Step 3: Cross multiply
    79,319.80x = 118,821.03 × 47,712.42
  4. Step 4: Simplify right side
    79,319.80x = 5,669,238,888.19
  5. Step 5: Solve for x
    x = 5,669,238,888.19/79,319.80
  6. Step 6: Final answer
    x = 71,473.19

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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.