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Finding the Fourth Proportional to 58,229.65, 80,381.86 and 40,105.80

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Solution

The fourth proportional to 58,229.65, 80,381.86 and 40,105.80 is: 55,363.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,229.65 : 80,381.86 = 40,105.80 : x
  2. Step 2: Convert to fraction form
    58,229.65/80,381.86 = 40,105.80/x
  3. Step 3: Cross multiply
    58,229.65x = 80,381.86 × 40,105.80
  4. Step 4: Simplify right side
    58,229.65x = 3,223,778,399.09
  5. Step 5: Solve for x
    x = 3,223,778,399.09/58,229.65
  6. Step 6: Final answer
    x = 55,363.18

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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.