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Finding the Fourth Proportional to 68,419.11, 94,410.03 and 38,206.11

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Solution

The fourth proportional to 68,419.11, 94,410.03 and 38,206.11 is: 52,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,419.11 : 94,410.03 = 38,206.11 : x
  2. Step 2: Convert to fraction form
    68,419.11/94,410.03 = 38,206.11/x
  3. Step 3: Cross multiply
    68,419.11x = 94,410.03 × 38,206.11
  4. Step 4: Simplify right side
    68,419.11x = 3,607,039,991.28
  5. Step 5: Solve for x
    x = 3,607,039,991.28/68,419.11
  6. Step 6: Final answer
    x = 52,719.77

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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.