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Finding the Fourth Proportional to 74,443.75, 102,732.38 and 40,909.75

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Solution

The fourth proportional to 74,443.75, 102,732.38 and 40,909.75 is: 56,455.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,443.75 : 102,732.38 = 40,909.75 : x
  2. Step 2: Convert to fraction form
    74,443.75/102,732.38 = 40,909.75/x
  3. Step 3: Cross multiply
    74,443.75x = 102,732.38 × 40,909.75
  4. Step 4: Simplify right side
    74,443.75x = 4,202,755,982.71
  5. Step 5: Solve for x
    x = 4,202,755,982.71/74,443.75
  6. Step 6: Final answer
    x = 56,455.46

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