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Finding the Fourth Proportional to 68,452.80, 102,669.60 and 21,710.40

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Solution

The fourth proportional to 68,452.80, 102,669.60 and 21,710.40 is: 32,562.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,452.80 : 102,669.60 = 21,710.40 : x
  2. Step 2: Convert to fraction form
    68,452.80/102,669.60 = 21,710.40/x
  3. Step 3: Cross multiply
    68,452.80x = 102,669.60 × 21,710.40
  4. Step 4: Simplify right side
    68,452.80x = 2,228,998,083.84
  5. Step 5: Solve for x
    x = 2,228,998,083.84/68,452.80
  6. Step 6: Final answer
    x = 32,562.56

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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.