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Finding the Fourth Proportional to 75,139.67, 103,697.74 and 43,310.62

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Solution

The fourth proportional to 75,139.67, 103,697.74 and 43,310.62 is: 59,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,139.67 : 103,697.74 = 43,310.62 : x
  2. Step 2: Convert to fraction form
    75,139.67/103,697.74 = 43,310.62/x
  3. Step 3: Cross multiply
    75,139.67x = 103,697.74 × 43,310.62
  4. Step 4: Simplify right side
    75,139.67x = 4,491,213,412.00
  5. Step 5: Solve for x
    x = 4,491,213,412.00/75,139.67
  6. Step 6: Final answer
    x = 59,771.53

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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.