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Finding the Fourth Proportional to 68,408.40, 102,497.40 and 64,261.20

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Solution

The fourth proportional to 68,408.40, 102,497.40 and 64,261.20 is: 96,283.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,408.40 : 102,497.40 = 64,261.20 : x
  2. Step 2: Convert to fraction form
    68,408.40/102,497.40 = 64,261.20/x
  3. Step 3: Cross multiply
    68,408.40x = 102,497.40 × 64,261.20
  4. Step 4: Simplify right side
    68,408.40x = 6,586,605,920.88
  5. Step 5: Solve for x
    x = 6,586,605,920.88/68,408.40
  6. Step 6: Final answer
    x = 96,283.58

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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.