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Finding the Fourth Proportional to 74,195.68, 102,390.04 and 40,203.89

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Solution

The fourth proportional to 74,195.68, 102,390.04 and 40,203.89 is: 55,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,195.68 : 102,390.04 = 40,203.89 : x
  2. Step 2: Convert to fraction form
    74,195.68/102,390.04 = 40,203.89/x
  3. Step 3: Cross multiply
    74,195.68x = 102,390.04 × 40,203.89
  4. Step 4: Simplify right side
    74,195.68x = 4,116,478,488.27
  5. Step 5: Solve for x
    x = 4,116,478,488.27/74,195.68
  6. Step 6: Final answer
    x = 55,481.37

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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.