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Finding the Fourth Proportional to 68,364.78, 94,343.22 and 38,148.30

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Solution

The fourth proportional to 68,364.78, 94,343.22 and 38,148.30 is: 52,644.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,364.78 : 94,343.22 = 38,148.30 : x
  2. Step 2: Convert to fraction form
    68,364.78/94,343.22 = 38,148.30/x
  3. Step 3: Cross multiply
    68,364.78x = 94,343.22 × 38,148.30
  4. Step 4: Simplify right side
    68,364.78x = 3,599,033,459.53
  5. Step 5: Solve for x
    x = 3,599,033,459.53/68,364.78
  6. Step 6: Final answer
    x = 52,644.56

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1.5x scale

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.