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Finding the Fourth Proportional to 72,595.65, 100,183.17 and 40,332.35

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Solution

The fourth proportional to 72,595.65, 100,183.17 and 40,332.35 is: 55,659.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,595.65 : 100,183.17 = 40,332.35 : x
  2. Step 2: Convert to fraction form
    72,595.65/100,183.17 = 40,332.35/x
  3. Step 3: Cross multiply
    72,595.65x = 100,183.17 × 40,332.35
  4. Step 4: Simplify right side
    72,595.65x = 4,040,622,175.63
  5. Step 5: Solve for x
    x = 4,040,622,175.63/72,595.65
  6. Step 6: Final answer
    x = 55,659.29

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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.