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Finding the Fourth Proportional to 27,489.60, 41,320.80 and 26,971.20

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Solution

The fourth proportional to 27,489.60, 41,320.80 and 26,971.20 is: 40,541.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,489.60 : 41,320.80 = 26,971.20 : x
  2. Step 2: Convert to fraction form
    27,489.60/41,320.80 = 26,971.20/x
  3. Step 3: Cross multiply
    27,489.60x = 41,320.80 × 26,971.20
  4. Step 4: Simplify right side
    27,489.60x = 1,114,471,560.96
  5. Step 5: Solve for x
    x = 1,114,471,560.96/27,489.60
  6. Step 6: Final answer
    x = 40,541.57

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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.