Home / 71,832.30-99,132.12-40,000.54

Finding the Fourth Proportional to 71,832.30, 99,132.12 and 40,000.54

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Solution

The fourth proportional to 71,832.30, 99,132.12 and 40,000.54 is: 55,202.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,832.30 : 99,132.12 = 40,000.54 : x
  2. Step 2: Convert to fraction form
    71,832.30/99,132.12 = 40,000.54/x
  3. Step 3: Cross multiply
    71,832.30x = 99,132.12 × 40,000.54
  4. Step 4: Simplify right side
    71,832.30x = 3,965,338,331.34
  5. Step 5: Solve for x
    x = 3,965,338,331.34/71,832.30
  6. Step 6: Final answer
    x = 55,202.72

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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.