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Finding the Fourth Proportional to 36,586.40, 54,937.20 and 21,034.40

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Solution

The fourth proportional to 36,586.40, 54,937.20 and 21,034.40 is: 31,584.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,586.40 : 54,937.20 = 21,034.40 : x
  2. Step 2: Convert to fraction form
    36,586.40/54,937.20 = 21,034.40/x
  3. Step 3: Cross multiply
    36,586.40x = 54,937.20 × 21,034.40
  4. Step 4: Simplify right side
    36,586.40x = 1,155,571,039.68
  5. Step 5: Solve for x
    x = 1,155,571,039.68/36,586.40
  6. Step 6: Final answer
    x = 31,584.72

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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.