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Finding the Fourth Proportional to 68,389.92, 94,400.64 and 40,095

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Solution

The fourth proportional to 68,389.92, 94,400.64 and 40,095 is: 55,344.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,389.92 : 94,400.64 = 40,095 : x
  2. Step 2: Convert to fraction form
    68,389.92/94,400.64 = 40,095/x
  3. Step 3: Cross multiply
    68,389.92x = 94,400.64 × 40,095
  4. Step 4: Simplify right side
    68,389.92x = 3,784,993,660.80
  5. Step 5: Solve for x
    x = 3,784,993,660.80/68,389.92
  6. Step 6: Final answer
    x = 55,344.32

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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.