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Finding the Fourth Proportional to 68,992.60, 95,164.86 and 56,397.40

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Solution

The fourth proportional to 68,992.60, 95,164.86 and 56,397.40 is: 77,791.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,992.60 : 95,164.86 = 56,397.40 : x
  2. Step 2: Convert to fraction form
    68,992.60/95,164.86 = 56,397.40/x
  3. Step 3: Cross multiply
    68,992.60x = 95,164.86 × 56,397.40
  4. Step 4: Simplify right side
    68,992.60x = 5,367,050,675.36
  5. Step 5: Solve for x
    x = 5,367,050,675.36/68,992.60
  6. Step 6: Final answer
    x = 77,791.69

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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.