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Finding the Fourth Proportional to 68,492.40, 102,738.60 and 42,248.40

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Solution

The fourth proportional to 68,492.40, 102,738.60 and 42,248.40 is: 63,372.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,492.40 : 102,738.60 = 42,248.40 : x
  2. Step 2: Convert to fraction form
    68,492.40/102,738.60 = 42,248.40/x
  3. Step 3: Cross multiply
    68,492.40x = 102,738.60 × 42,248.40
  4. Step 4: Simplify right side
    68,492.40x = 4,340,541,468.24
  5. Step 5: Solve for x
    x = 4,340,541,468.24/68,492.40
  6. Step 6: Final answer
    x = 63,372.60

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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.