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Finding the Fourth Proportional to 79,449.59, 119,174.29 and 20,285.30

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Solution

The fourth proportional to 79,449.59, 119,174.29 and 20,285.30 is: 30,427.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,449.59 : 119,174.29 = 20,285.30 : x
  2. Step 2: Convert to fraction form
    79,449.59/119,174.29 = 20,285.30/x
  3. Step 3: Cross multiply
    79,449.59x = 119,174.29 × 20,285.30
  4. Step 4: Simplify right side
    79,449.59x = 2,417,486,472.16
  5. Step 5: Solve for x
    x = 2,417,486,472.16/79,449.59
  6. Step 6: Final answer
    x = 30,427.93

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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.