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Finding the Fourth Proportional to 75,267.44, 112,865.32 and 28,490.48

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Solution

The fourth proportional to 75,267.44, 112,865.32 and 28,490.48 is: 42,722.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,267.44 : 112,865.32 = 28,490.48 : x
  2. Step 2: Convert to fraction form
    75,267.44/112,865.32 = 28,490.48/x
  3. Step 3: Cross multiply
    75,267.44x = 112,865.32 × 28,490.48
  4. Step 4: Simplify right side
    75,267.44x = 3,215,587,142.15
  5. Step 5: Solve for x
    x = 3,215,587,142.15/75,267.44
  6. Step 6: Final answer
    x = 42,722.15

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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.