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Finding the Fourth Proportional to 68,653, 94,742.58 and 38,845

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Solution

The fourth proportional to 68,653, 94,742.58 and 38,845 is: 53,606.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,653 : 94,742.58 = 38,845 : x
  2. Step 2: Convert to fraction form
    68,653/94,742.58 = 38,845/x
  3. Step 3: Cross multiply
    68,653x = 94,742.58 × 38,845
  4. Step 4: Simplify right side
    68,653x = 3,680,275,520.10
  5. Step 5: Solve for x
    x = 3,680,275,520.10/68,653
  6. Step 6: Final answer
    x = 53,606.91

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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.