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Finding the Fourth Proportional to 68,475.60, 102,538.44 and 60,660.72

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Solution

The fourth proportional to 68,475.60, 102,538.44 and 60,660.72 is: 90,836.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,475.60 : 102,538.44 = 60,660.72 : x
  2. Step 2: Convert to fraction form
    68,475.60/102,538.44 = 60,660.72/x
  3. Step 3: Cross multiply
    68,475.60x = 102,538.44 × 60,660.72
  4. Step 4: Simplify right side
    68,475.60x = 6,220,055,598.08
  5. Step 5: Solve for x
    x = 6,220,055,598.08/68,475.60
  6. Step 6: Final answer
    x = 90,836.09

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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.