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Finding the Fourth Proportional to 68,758.40, 94,893.32 and 38,543.78

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Solution

The fourth proportional to 68,758.40, 94,893.32 and 38,543.78 is: 53,194.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,758.40 : 94,893.32 = 38,543.78 : x
  2. Step 2: Convert to fraction form
    68,758.40/94,893.32 = 38,543.78/x
  3. Step 3: Cross multiply
    68,758.40x = 94,893.32 × 38,543.78
  4. Step 4: Simplify right side
    68,758.40x = 3,657,547,249.55
  5. Step 5: Solve for x
    x = 3,657,547,249.55/68,758.40
  6. Step 6: Final answer
    x = 53,194.19

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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.