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Finding the Fourth Proportional to 66,268.66, 99,381.53 and 21,884.71

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Solution

The fourth proportional to 66,268.66, 99,381.53 and 21,884.71 is: 32,819.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,268.66 : 99,381.53 = 21,884.71 : x
  2. Step 2: Convert to fraction form
    66,268.66/99,381.53 = 21,884.71/x
  3. Step 3: Cross multiply
    66,268.66x = 99,381.53 × 21,884.71
  4. Step 4: Simplify right side
    66,268.66x = 2,174,935,853.98
  5. Step 5: Solve for x
    x = 2,174,935,853.98/66,268.66
  6. Step 6: Final answer
    x = 32,819.98

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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.