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Finding the Fourth Proportional to 75,149.01, 103,682.16 and 43,313.58

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Solution

The fourth proportional to 75,149.01, 103,682.16 and 43,313.58 is: 59,759.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,149.01 : 103,682.16 = 43,313.58 : x
  2. Step 2: Convert to fraction form
    75,149.01/103,682.16 = 43,313.58/x
  3. Step 3: Cross multiply
    75,149.01x = 103,682.16 × 43,313.58
  4. Step 4: Simplify right side
    75,149.01x = 4,490,845,531.73
  5. Step 5: Solve for x
    x = 4,490,845,531.73/75,149.01
  6. Step 6: Final answer
    x = 59,759.21

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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.