Home / 68,485.28-102,586.40-40,318.56

Finding the Fourth Proportional to 68,485.28, 102,586.40 and 40,318.56

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Solution

The fourth proportional to 68,485.28, 102,586.40 and 40,318.56 is: 60,394.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,485.28 : 102,586.40 = 40,318.56 : x
  2. Step 2: Convert to fraction form
    68,485.28/102,586.40 = 40,318.56/x
  3. Step 3: Cross multiply
    68,485.28x = 102,586.40 × 40,318.56
  4. Step 4: Simplify right side
    68,485.28x = 4,136,135,923.58
  5. Step 5: Solve for x
    x = 4,136,135,923.58/68,485.28
  6. Step 6: Final answer
    x = 60,394.52

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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.