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Finding the Fourth Proportional to 66,739.95, 100,066.19 and 27,257.31

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Solution

The fourth proportional to 66,739.95, 100,066.19 and 27,257.31 is: 40,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,739.95 : 100,066.19 = 27,257.31 : x
  2. Step 2: Convert to fraction form
    66,739.95/100,066.19 = 27,257.31/x
  3. Step 3: Cross multiply
    66,739.95x = 100,066.19 × 27,257.31
  4. Step 4: Simplify right side
    66,739.95x = 2,727,535,025.06
  5. Step 5: Solve for x
    x = 2,727,535,025.06/66,739.95
  6. Step 6: Final answer
    x = 40,868.10

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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.