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Finding the Fourth Proportional to 72,331.62, 108,486.15 and 19,745.22

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Solution

The fourth proportional to 72,331.62, 108,486.15 and 19,745.22 is: 29,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,331.62 : 108,486.15 = 19,745.22 : x
  2. Step 2: Convert to fraction form
    72,331.62/108,486.15 = 19,745.22/x
  3. Step 3: Cross multiply
    72,331.62x = 108,486.15 × 19,745.22
  4. Step 4: Simplify right side
    72,331.62x = 2,142,082,898.70
  5. Step 5: Solve for x
    x = 2,142,082,898.70/72,331.62
  6. Step 6: Final answer
    x = 29,614.75

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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.