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Finding the Fourth Proportional to 66,777.58, 100,169.70 and 20,026

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Solution

The fourth proportional to 66,777.58, 100,169.70 and 20,026 is: 30,040.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,777.58 : 100,169.70 = 20,026 : x
  2. Step 2: Convert to fraction form
    66,777.58/100,169.70 = 20,026/x
  3. Step 3: Cross multiply
    66,777.58x = 100,169.70 × 20,026
  4. Step 4: Simplify right side
    66,777.58x = 2,005,998,412.20
  5. Step 5: Solve for x
    x = 2,005,998,412.20/66,777.58
  6. Step 6: Final answer
    x = 30,040.00

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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.