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Finding the Fourth Proportional to 75,620.64, 113,432.04 and 28,876.08

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Solution

The fourth proportional to 75,620.64, 113,432.04 and 28,876.08 is: 43,314.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,620.64 : 113,432.04 = 28,876.08 : x
  2. Step 2: Convert to fraction form
    75,620.64/113,432.04 = 28,876.08/x
  3. Step 3: Cross multiply
    75,620.64x = 113,432.04 × 28,876.08
  4. Step 4: Simplify right side
    75,620.64x = 3,275,472,661.60
  5. Step 5: Solve for x
    x = 3,275,472,661.60/75,620.64
  6. Step 6: Final answer
    x = 43,314.53

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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.