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Finding the Fourth Proportional to 74,761.68, 103,168.67 and 40,769.22

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Solution

The fourth proportional to 74,761.68, 103,168.67 and 40,769.22 is: 56,260.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,761.68 : 103,168.67 = 40,769.22 : x
  2. Step 2: Convert to fraction form
    74,761.68/103,168.67 = 40,769.22/x
  3. Step 3: Cross multiply
    74,761.68x = 103,168.67 × 40,769.22
  4. Step 4: Simplify right side
    74,761.68x = 4,206,106,204.34
  5. Step 5: Solve for x
    x = 4,206,106,204.34/74,761.68
  6. Step 6: Final answer
    x = 56,260.19

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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.