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Finding the Fourth Proportional to 75,156.72, 103,734.99 and 43,344.78

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Solution

The fourth proportional to 75,156.72, 103,734.99 and 43,344.78 is: 59,826.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,156.72 : 103,734.99 = 43,344.78 : x
  2. Step 2: Convert to fraction form
    75,156.72/103,734.99 = 43,344.78/x
  3. Step 3: Cross multiply
    75,156.72x = 103,734.99 × 43,344.78
  4. Step 4: Simplify right side
    75,156.72x = 4,496,370,319.85
  5. Step 5: Solve for x
    x = 4,496,370,319.85/75,156.72
  6. Step 6: Final answer
    x = 59,826.59

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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.