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Finding the Fourth Proportional to 68,365.20, 102,562.20 and 21,622.80

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Solution

The fourth proportional to 68,365.20, 102,562.20 and 21,622.80 is: 32,438.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,365.20 : 102,562.20 = 21,622.80 : x
  2. Step 2: Convert to fraction form
    68,365.20/102,562.20 = 21,622.80/x
  3. Step 3: Cross multiply
    68,365.20x = 102,562.20 × 21,622.80
  4. Step 4: Simplify right side
    68,365.20x = 2,217,681,938.16
  5. Step 5: Solve for x
    x = 2,217,681,938.16/68,365.20
  6. Step 6: Final answer
    x = 32,438.75

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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.