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Finding the Fourth Proportional to 79,504.80, 119,261.28 and 20,340.98

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Solution

The fourth proportional to 79,504.80, 119,261.28 and 20,340.98 is: 30,512.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,504.80 : 119,261.28 = 20,340.98 : x
  2. Step 2: Convert to fraction form
    79,504.80/119,261.28 = 20,340.98/x
  3. Step 3: Cross multiply
    79,504.80x = 119,261.28 × 20,340.98
  4. Step 4: Simplify right side
    79,504.80x = 2,425,891,311.25
  5. Step 5: Solve for x
    x = 2,425,891,311.25/79,504.80
  6. Step 6: Final answer
    x = 30,512.51

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1.5x scale

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.