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Finding the Fourth Proportional to 68,535.84, 102,814.56 and 21,799.20

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Solution

The fourth proportional to 68,535.84, 102,814.56 and 21,799.20 is: 32,702.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,535.84 : 102,814.56 = 21,799.20 : x
  2. Step 2: Convert to fraction form
    68,535.84/102,814.56 = 21,799.20/x
  3. Step 3: Cross multiply
    68,535.84x = 102,814.56 × 21,799.20
  4. Step 4: Simplify right side
    68,535.84x = 2,241,275,156.35
  5. Step 5: Solve for x
    x = 2,241,275,156.35/68,535.84
  6. Step 6: Final answer
    x = 32,702.24

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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.