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Finding the Fourth Proportional to 72,324.65, 99,806.90 and 40,494.69

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Solution

The fourth proportional to 72,324.65, 99,806.90 and 40,494.69 is: 55,882.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,324.65 : 99,806.90 = 40,494.69 : x
  2. Step 2: Convert to fraction form
    72,324.65/99,806.90 = 40,494.69/x
  3. Step 3: Cross multiply
    72,324.65x = 99,806.90 × 40,494.69
  4. Step 4: Simplify right side
    72,324.65x = 4,041,649,576.60
  5. Step 5: Solve for x
    x = 4,041,649,576.60/72,324.65
  6. Step 6: Final answer
    x = 55,882.05

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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.