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Finding the Fourth Proportional to 75,305.60, 113,003.20 and 28,563.20

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Solution

The fourth proportional to 75,305.60, 113,003.20 and 28,563.20 is: 42,861.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,305.60 : 113,003.20 = 28,563.20 : x
  2. Step 2: Convert to fraction form
    75,305.60/113,003.20 = 28,563.20/x
  3. Step 3: Cross multiply
    75,305.60x = 113,003.20 × 28,563.20
  4. Step 4: Simplify right side
    75,305.60x = 3,227,733,002.24
  5. Step 5: Solve for x
    x = 3,227,733,002.24/75,305.60
  6. Step 6: Final answer
    x = 42,861.79

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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.