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Finding the Fourth Proportional to 68,652.02, 94,728.78 and 38,438.60

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Solution

The fourth proportional to 68,652.02, 94,728.78 and 38,438.60 is: 53,039.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,652.02 : 94,728.78 = 38,438.60 : x
  2. Step 2: Convert to fraction form
    68,652.02/94,728.78 = 38,438.60/x
  3. Step 3: Cross multiply
    68,652.02x = 94,728.78 × 38,438.60
  4. Step 4: Simplify right side
    68,652.02x = 3,641,241,682.91
  5. Step 5: Solve for x
    x = 3,641,241,682.91/68,652.02
  6. Step 6: Final answer
    x = 53,039.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.