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Finding the Fourth Proportional to 68,975.92, 103,595.08 and 42,863.12

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Solution

The fourth proportional to 68,975.92, 103,595.08 and 42,863.12 is: 64,376.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,975.92 : 103,595.08 = 42,863.12 : x
  2. Step 2: Convert to fraction form
    68,975.92/103,595.08 = 42,863.12/x
  3. Step 3: Cross multiply
    68,975.92x = 103,595.08 × 42,863.12
  4. Step 4: Simplify right side
    68,975.92x = 4,440,408,345.45
  5. Step 5: Solve for x
    x = 4,440,408,345.45/68,975.92
  6. Step 6: Final answer
    x = 64,376.21

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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.