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Finding the Fourth Proportional to 67,998.94, 101,998.41 and 21,252.22

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Solution

The fourth proportional to 67,998.94, 101,998.41 and 21,252.22 is: 31,878.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,998.94 : 101,998.41 = 21,252.22 : x
  2. Step 2: Convert to fraction form
    67,998.94/101,998.41 = 21,252.22/x
  3. Step 3: Cross multiply
    67,998.94x = 101,998.41 × 21,252.22
  4. Step 4: Simplify right side
    67,998.94x = 2,167,692,648.97
  5. Step 5: Solve for x
    x = 2,167,692,648.97/67,998.94
  6. Step 6: Final answer
    x = 31,878.33

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1.5x scale

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.