Home / 71,908.92-99,234.45-40,077.18

Finding the Fourth Proportional to 71,908.92, 99,234.45 and 40,077.18

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Solution

The fourth proportional to 71,908.92, 99,234.45 and 40,077.18 is: 55,306.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,908.92 : 99,234.45 = 40,077.18 : x
  2. Step 2: Convert to fraction form
    71,908.92/99,234.45 = 40,077.18/x
  3. Step 3: Cross multiply
    71,908.92x = 99,234.45 × 40,077.18
  4. Step 4: Simplify right side
    71,908.92x = 3,977,036,914.85
  5. Step 5: Solve for x
    x = 3,977,036,914.85/71,908.92
  6. Step 6: Final answer
    x = 55,306.59

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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.