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Finding the Fourth Proportional to 68,396.75, 94,389.11 and 42,904.19

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Solution

The fourth proportional to 68,396.75, 94,389.11 and 42,904.19 is: 59,208.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,396.75 : 94,389.11 = 42,904.19 : x
  2. Step 2: Convert to fraction form
    68,396.75/94,389.11 = 42,904.19/x
  3. Step 3: Cross multiply
    68,396.75x = 94,389.11 × 42,904.19
  4. Step 4: Simplify right side
    68,396.75x = 4,049,688,309.37
  5. Step 5: Solve for x
    x = 4,049,688,309.37/68,396.75
  6. Step 6: Final answer
    x = 59,208.78

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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.