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Finding the Fourth Proportional to 68,171.60, 101,709.82 and 60,687.20

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Solution

The fourth proportional to 68,171.60, 101,709.82 and 60,687.20 is: 90,543.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,171.60 : 101,709.82 = 60,687.20 : x
  2. Step 2: Convert to fraction form
    68,171.60/101,709.82 = 60,687.20/x
  3. Step 3: Cross multiply
    68,171.60x = 101,709.82 × 60,687.20
  4. Step 4: Simplify right side
    68,171.60x = 6,172,484,188.30
  5. Step 5: Solve for x
    x = 6,172,484,188.30/68,171.60
  6. Step 6: Final answer
    x = 90,543.34

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.