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Finding the Fourth Proportional to 68,578.86, 94,634.40 and 38,358.96

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Solution

The fourth proportional to 68,578.86, 94,634.40 and 38,358.96 is: 52,932.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,578.86 : 94,634.40 = 38,358.96 : x
  2. Step 2: Convert to fraction form
    68,578.86/94,634.40 = 38,358.96/x
  3. Step 3: Cross multiply
    68,578.86x = 94,634.40 × 38,358.96
  4. Step 4: Simplify right side
    68,578.86x = 3,630,077,164.22
  5. Step 5: Solve for x
    x = 3,630,077,164.22/68,578.86
  6. Step 6: Final answer
    x = 52,932.89

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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.