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Finding the Fourth Proportional to 72,496.65, 100,042.77 and 40,232.68

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Solution

The fourth proportional to 72,496.65, 100,042.77 and 40,232.68 is: 55,519.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,496.65 : 100,042.77 = 40,232.68 : x
  2. Step 2: Convert to fraction form
    72,496.65/100,042.77 = 40,232.68/x
  3. Step 3: Cross multiply
    72,496.65x = 100,042.77 × 40,232.68
  4. Step 4: Simplify right side
    72,496.65x = 4,024,988,550.56
  5. Step 5: Solve for x
    x = 4,024,988,550.56/72,496.65
  6. Step 6: Final answer
    x = 55,519.65

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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.