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Finding the Fourth Proportional to 41,119.40, 61,664.70 and 21,391.40

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Solution

The fourth proportional to 41,119.40, 61,664.70 and 21,391.40 is: 32,079.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,119.40 : 61,664.70 = 21,391.40 : x
  2. Step 2: Convert to fraction form
    41,119.40/61,664.70 = 21,391.40/x
  3. Step 3: Cross multiply
    41,119.40x = 61,664.70 × 21,391.40
  4. Step 4: Simplify right side
    41,119.40x = 1,319,094,263.58
  5. Step 5: Solve for x
    x = 1,319,094,263.58/41,119.40
  6. Step 6: Final answer
    x = 32,079.61

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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.