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Finding the Fourth Proportional to 75,649.28, 113,473.92 and 28,906.88

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Solution

The fourth proportional to 75,649.28, 113,473.92 and 28,906.88 is: 43,360.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,649.28 : 113,473.92 = 28,906.88 : x
  2. Step 2: Convert to fraction form
    75,649.28/113,473.92 = 28,906.88/x
  3. Step 3: Cross multiply
    75,649.28x = 113,473.92 × 28,906.88
  4. Step 4: Simplify right side
    75,649.28x = 3,280,176,988.57
  5. Step 5: Solve for x
    x = 3,280,176,988.57/75,649.28
  6. Step 6: Final answer
    x = 43,360.32

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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.