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Finding the Fourth Proportional to 71,832.70, 99,191.81 and 45,021.30

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Solution

The fourth proportional to 71,832.70, 99,191.81 and 45,021.30 is: 62,168.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,832.70 : 99,191.81 = 45,021.30 : x
  2. Step 2: Convert to fraction form
    71,832.70/99,191.81 = 45,021.30/x
  3. Step 3: Cross multiply
    71,832.70x = 99,191.81 × 45,021.30
  4. Step 4: Simplify right side
    71,832.70x = 4,465,744,235.55
  5. Step 5: Solve for x
    x = 4,465,744,235.55/71,832.70
  6. Step 6: Final answer
    x = 62,168.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.