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Finding the Fourth Proportional to 66,216, 99,323.20 and 26,772.80

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Solution

The fourth proportional to 66,216, 99,323.20 and 26,772.80 is: 40,158.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,216 : 99,323.20 = 26,772.80 : x
  2. Step 2: Convert to fraction form
    66,216/99,323.20 = 26,772.80/x
  3. Step 3: Cross multiply
    66,216x = 99,323.20 × 26,772.80
  4. Step 4: Simplify right side
    66,216x = 2,659,160,168.96
  5. Step 5: Solve for x
    x = 2,659,160,168.96/66,216
  6. Step 6: Final answer
    x = 40,158.88

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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.