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Finding the Fourth Proportional to 99,745.92, 149,673.96 and 40,623.21

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Solution

The fourth proportional to 99,745.92, 149,673.96 and 40,623.21 is: 60,957.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,745.92 : 149,673.96 = 40,623.21 : x
  2. Step 2: Convert to fraction form
    99,745.92/149,673.96 = 40,623.21/x
  3. Step 3: Cross multiply
    99,745.92x = 149,673.96 × 40,623.21
  4. Step 4: Simplify right side
    99,745.92x = 6,080,236,708.61
  5. Step 5: Solve for x
    x = 6,080,236,708.61/99,745.92
  6. Step 6: Final answer
    x = 60,957.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.