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Finding the Fourth Proportional to 66,167.08, 99,256.08 and 21,195

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Solution

The fourth proportional to 66,167.08, 99,256.08 and 21,195 is: 31,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,167.08 : 99,256.08 = 21,195 : x
  2. Step 2: Convert to fraction form
    66,167.08/99,256.08 = 21,195/x
  3. Step 3: Cross multiply
    66,167.08x = 99,256.08 × 21,195
  4. Step 4: Simplify right side
    66,167.08x = 2,103,732,615.60
  5. Step 5: Solve for x
    x = 2,103,732,615.60/66,167.08
  6. Step 6: Final answer
    x = 31,794.25

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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.