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Finding the Fourth Proportional to 75,144.56, 112,537.94 and 43,487.92

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Solution

The fourth proportional to 75,144.56, 112,537.94 and 43,487.92 is: 65,128.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,144.56 : 112,537.94 = 43,487.92 : x
  2. Step 2: Convert to fraction form
    75,144.56/112,537.94 = 43,487.92/x
  3. Step 3: Cross multiply
    75,144.56x = 112,537.94 × 43,487.92
  4. Step 4: Simplify right side
    75,144.56x = 4,894,040,931.68
  5. Step 5: Solve for x
    x = 4,894,040,931.68/75,144.56
  6. Step 6: Final answer
    x = 65,128.35

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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.