Home / 78,983.66-108,997.43-43,173.81

Finding the Fourth Proportional to 78,983.66, 108,997.43 and 43,173.81

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Solution

The fourth proportional to 78,983.66, 108,997.43 and 43,173.81 is: 59,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,983.66 : 108,997.43 = 43,173.81 : x
  2. Step 2: Convert to fraction form
    78,983.66/108,997.43 = 43,173.81/x
  3. Step 3: Cross multiply
    78,983.66x = 108,997.43 × 43,173.81
  4. Step 4: Simplify right side
    78,983.66x = 4,705,834,360.29
  5. Step 5: Solve for x
    x = 4,705,834,360.29/78,983.66
  6. Step 6: Final answer
    x = 59,579.85

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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.