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Finding the Fourth Proportional to 74,673.06, 103,046.49 and 42,842.49

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Solution

The fourth proportional to 74,673.06, 103,046.49 and 42,842.49 is: 59,121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,673.06 : 103,046.49 = 42,842.49 : x
  2. Step 2: Convert to fraction form
    74,673.06/103,046.49 = 42,842.49/x
  3. Step 3: Cross multiply
    74,673.06x = 103,046.49 × 42,842.49
  4. Step 4: Simplify right side
    74,673.06x = 4,414,768,217.36
  5. Step 5: Solve for x
    x = 4,414,768,217.36/74,673.06
  6. Step 6: Final answer
    x = 59,121.30

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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.