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Finding the Fourth Proportional to 68,720.59, 94,844.43 and 38,507.97

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Solution

The fourth proportional to 68,720.59, 94,844.43 and 38,507.97 is: 53,146.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,720.59 : 94,844.43 = 38,507.97 : x
  2. Step 2: Convert to fraction form
    68,720.59/94,844.43 = 38,507.97/x
  3. Step 3: Cross multiply
    68,720.59x = 94,844.43 × 38,507.97
  4. Step 4: Simplify right side
    68,720.59x = 3,652,266,465.11
  5. Step 5: Solve for x
    x = 3,652,266,465.11/68,720.59
  6. Step 6: Final answer
    x = 53,146.61

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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.