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Finding the Fourth Proportional to 74,775, 103,191.66 and 41,243.16

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Solution

The fourth proportional to 74,775, 103,191.66 and 41,243.16 is: 56,916.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,775 : 103,191.66 = 41,243.16 : x
  2. Step 2: Convert to fraction form
    74,775/103,191.66 = 41,243.16/x
  3. Step 3: Cross multiply
    74,775x = 103,191.66 × 41,243.16
  4. Step 4: Simplify right side
    74,775x = 4,255,950,144.05
  5. Step 5: Solve for x
    x = 4,255,950,144.05/74,775
  6. Step 6: Final answer
    x = 56,916.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.