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Finding the Fourth Proportional to 66,266.19, 99,402.48 and 21,891.96

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Solution

The fourth proportional to 66,266.19, 99,402.48 and 21,891.96 is: 32,839.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,266.19 : 99,402.48 = 21,891.96 : x
  2. Step 2: Convert to fraction form
    66,266.19/99,402.48 = 21,891.96/x
  3. Step 3: Cross multiply
    66,266.19x = 99,402.48 × 21,891.96
  4. Step 4: Simplify right side
    66,266.19x = 2,176,115,116.06
  5. Step 5: Solve for x
    x = 2,176,115,116.06/66,266.19
  6. Step 6: Final answer
    x = 32,839.00

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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.