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Finding the Fourth Proportional to 66,238.44, 99,357.66 and 38,517

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Solution

The fourth proportional to 66,238.44, 99,357.66 and 38,517 is: 57,775.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,238.44 : 99,357.66 = 38,517 : x
  2. Step 2: Convert to fraction form
    66,238.44/99,357.66 = 38,517/x
  3. Step 3: Cross multiply
    66,238.44x = 99,357.66 × 38,517
  4. Step 4: Simplify right side
    66,238.44x = 3,826,958,990.22
  5. Step 5: Solve for x
    x = 3,826,958,990.22/66,238.44
  6. Step 6: Final answer
    x = 57,775.50

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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.