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Finding the Fourth Proportional to 99,749.92, 149,679.96 and 40,627.21

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Solution

The fourth proportional to 99,749.92, 149,679.96 and 40,627.21 is: 60,963.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,749.92 : 149,679.96 = 40,627.21 : x
  2. Step 2: Convert to fraction form
    99,749.92/149,679.96 = 40,627.21/x
  3. Step 3: Cross multiply
    99,749.92x = 149,679.96 × 40,627.21
  4. Step 4: Simplify right side
    99,749.92x = 6,081,079,167.71
  5. Step 5: Solve for x
    x = 6,081,079,167.71/99,749.92
  6. Step 6: Final answer
    x = 60,963.25

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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.