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Finding the Fourth Proportional to 66,208.81, 99,292.13 and 21,827.29

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Solution

The fourth proportional to 66,208.81, 99,292.13 and 21,827.29 is: 32,733.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,208.81 : 99,292.13 = 21,827.29 : x
  2. Step 2: Convert to fraction form
    66,208.81/99,292.13 = 21,827.29/x
  3. Step 3: Cross multiply
    66,208.81x = 99,292.13 × 21,827.29
  4. Step 4: Simplify right side
    66,208.81x = 2,167,278,007.09
  5. Step 5: Solve for x
    x = 2,167,278,007.09/66,208.81
  6. Step 6: Final answer
    x = 32,733.98

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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.