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Finding the Fourth Proportional to 75,879.97, 113,832.30 and 28,498.75

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Solution

The fourth proportional to 75,879.97, 113,832.30 and 28,498.75 is: 42,752.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,879.97 : 113,832.30 = 28,498.75 : x
  2. Step 2: Convert to fraction form
    75,879.97/113,832.30 = 28,498.75/x
  3. Step 3: Cross multiply
    75,879.97x = 113,832.30 × 28,498.75
  4. Step 4: Simplify right side
    75,879.97x = 3,244,078,259.63
  5. Step 5: Solve for x
    x = 3,244,078,259.63/75,879.97
  6. Step 6: Final answer
    x = 42,752.76

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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.