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Finding the Fourth Proportional to 75,879.40, 113,559.90 and 66,548.20

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Solution

The fourth proportional to 75,879.40, 113,559.90 and 66,548.20 is: 99,594.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,879.40 : 113,559.90 = 66,548.20 : x
  2. Step 2: Convert to fraction form
    75,879.40/113,559.90 = 66,548.20/x
  3. Step 3: Cross multiply
    75,879.40x = 113,559.90 × 66,548.20
  4. Step 4: Simplify right side
    75,879.40x = 7,557,206,937.18
  5. Step 5: Solve for x
    x = 7,557,206,937.18/75,879.40
  6. Step 6: Final answer
    x = 99,594.97

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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.