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Finding the Fourth Proportional to 74,645.56, 103,007.65 and 40,654.11

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Solution

The fourth proportional to 74,645.56, 103,007.65 and 40,654.11 is: 56,100.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,645.56 : 103,007.65 = 40,654.11 : x
  2. Step 2: Convert to fraction form
    74,645.56/103,007.65 = 40,654.11/x
  3. Step 3: Cross multiply
    74,645.56x = 103,007.65 × 40,654.11
  4. Step 4: Simplify right side
    74,645.56x = 4,187,684,405.10
  5. Step 5: Solve for x
    x = 4,187,684,405.10/74,645.56
  6. Step 6: Final answer
    x = 56,100.92

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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.