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Finding the Fourth Proportional to 55,379.30, 83,081.10 and 27,312.80

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Solution

The fourth proportional to 55,379.30, 83,081.10 and 27,312.80 is: 40,975.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,379.30 : 83,081.10 = 27,312.80 : x
  2. Step 2: Convert to fraction form
    55,379.30/83,081.10 = 27,312.80/x
  3. Step 3: Cross multiply
    55,379.30x = 83,081.10 × 27,312.80
  4. Step 4: Simplify right side
    55,379.30x = 2,269,177,468.08
  5. Step 5: Solve for x
    x = 2,269,177,468.08/55,379.30
  6. Step 6: Final answer
    x = 40,975.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.