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Finding the Fourth Proportional to 75,604.80, 113,450.40 and 28,891.20

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Solution

The fourth proportional to 75,604.80, 113,450.40 and 28,891.20 is: 43,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,604.80 : 113,450.40 = 28,891.20 : x
  2. Step 2: Convert to fraction form
    75,604.80/113,450.40 = 28,891.20/x
  3. Step 3: Cross multiply
    75,604.80x = 113,450.40 × 28,891.20
  4. Step 4: Simplify right side
    75,604.80x = 3,277,718,196.48
  5. Step 5: Solve for x
    x = 3,277,718,196.48/75,604.80
  6. Step 6: Final answer
    x = 43,353.31

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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.