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Finding the Fourth Proportional to 79,474.01, 119,211.08 and 20,309.74

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Solution

The fourth proportional to 79,474.01, 119,211.08 and 20,309.74 is: 30,464.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,474.01 : 119,211.08 = 20,309.74 : x
  2. Step 2: Convert to fraction form
    79,474.01/119,211.08 = 20,309.74/x
  3. Step 3: Cross multiply
    79,474.01x = 119,211.08 × 20,309.74
  4. Step 4: Simplify right side
    79,474.01x = 2,421,145,640.34
  5. Step 5: Solve for x
    x = 2,421,145,640.34/79,474.01
  6. Step 6: Final answer
    x = 30,464.62

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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.