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Finding the Fourth Proportional to 79,751.40, 119,643.30 and 27,166.20

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Solution

The fourth proportional to 79,751.40, 119,643.30 and 27,166.20 is: 40,754.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,751.40 : 119,643.30 = 27,166.20 : x
  2. Step 2: Convert to fraction form
    79,751.40/119,643.30 = 27,166.20/x
  3. Step 3: Cross multiply
    79,751.40x = 119,643.30 × 27,166.20
  4. Step 4: Simplify right side
    79,751.40x = 3,250,253,816.46
  5. Step 5: Solve for x
    x = 3,250,253,816.46/79,751.40
  6. Step 6: Final answer
    x = 40,754.82

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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.