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Finding the Fourth Proportional to 79,843.16, 119,765.88 and 38,280.44

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Solution

The fourth proportional to 79,843.16, 119,765.88 and 38,280.44 is: 57,421.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,843.16 : 119,765.88 = 38,280.44 : x
  2. Step 2: Convert to fraction form
    79,843.16/119,765.88 = 38,280.44/x
  3. Step 3: Cross multiply
    79,843.16x = 119,765.88 × 38,280.44
  4. Step 4: Simplify right side
    79,843.16x = 4,584,690,583.39
  5. Step 5: Solve for x
    x = 4,584,690,583.39/79,843.16
  6. Step 6: Final answer
    x = 57,421.21

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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.