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Finding the Fourth Proportional to 69,264.01, 103,899.11 and 21,229.08

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Solution

The fourth proportional to 69,264.01, 103,899.11 and 21,229.08 is: 31,844.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,264.01 : 103,899.11 = 21,229.08 : x
  2. Step 2: Convert to fraction form
    69,264.01/103,899.11 = 21,229.08/x
  3. Step 3: Cross multiply
    69,264.01x = 103,899.11 × 21,229.08
  4. Step 4: Simplify right side
    69,264.01x = 2,205,682,518.12
  5. Step 5: Solve for x
    x = 2,205,682,518.12/69,264.01
  6. Step 6: Final answer
    x = 31,844.57

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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.