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Finding the Fourth Proportional to 75,997.53, 113,978.94 and 28,617.62

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Solution

The fourth proportional to 75,997.53, 113,978.94 and 28,617.62 is: 42,919.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,997.53 : 113,978.94 = 28,617.62 : x
  2. Step 2: Convert to fraction form
    75,997.53/113,978.94 = 28,617.62/x
  3. Step 3: Cross multiply
    75,997.53x = 113,978.94 × 28,617.62
  4. Step 4: Simplify right side
    75,997.53x = 3,261,805,423.03
  5. Step 5: Solve for x
    x = 3,261,805,423.03/75,997.53
  6. Step 6: Final answer
    x = 42,919.89

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1.5x scale

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.