Home / 78,984.86-108,997.17-43,173.86

Finding the Fourth Proportional to 78,984.86, 108,997.17 and 43,173.86

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Solution

The fourth proportional to 78,984.86, 108,997.17 and 43,173.86 is: 59,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,984.86 : 108,997.17 = 43,173.86 : x
  2. Step 2: Convert to fraction form
    78,984.86/108,997.17 = 43,173.86/x
  3. Step 3: Cross multiply
    78,984.86x = 108,997.17 × 43,173.86
  4. Step 4: Simplify right side
    78,984.86x = 4,705,828,557.98
  5. Step 5: Solve for x
    x = 4,705,828,557.98/78,984.86
  6. Step 6: Final answer
    x = 59,578.87

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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.