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Finding the Fourth Proportional to 68,548.32, 102,821.40 and 21,800.52

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Solution

The fourth proportional to 68,548.32, 102,821.40 and 21,800.52 is: 32,700.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,548.32 : 102,821.40 = 21,800.52 : x
  2. Step 2: Convert to fraction form
    68,548.32/102,821.40 = 21,800.52/x
  3. Step 3: Cross multiply
    68,548.32x = 102,821.40 × 21,800.52
  4. Step 4: Simplify right side
    68,548.32x = 2,241,559,987.13
  5. Step 5: Solve for x
    x = 2,241,559,987.13/68,548.32
  6. Step 6: Final answer
    x = 32,700.44

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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.