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Finding the Fourth Proportional to 61,218.20, 91,827.30 and 41,389.40

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Solution

The fourth proportional to 61,218.20, 91,827.30 and 41,389.40 is: 62,084.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,218.20 : 91,827.30 = 41,389.40 : x
  2. Step 2: Convert to fraction form
    61,218.20/91,827.30 = 41,389.40/x
  3. Step 3: Cross multiply
    61,218.20x = 91,827.30 × 41,389.40
  4. Step 4: Simplify right side
    61,218.20x = 3,800,676,850.62
  5. Step 5: Solve for x
    x = 3,800,676,850.62/61,218.20
  6. Step 6: Final answer
    x = 62,084.10

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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.