Home / 77,983.70-116,866.20-68,579.60

Finding the Fourth Proportional to 77,983.70, 116,866.20 and 68,579.60

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Solution

The fourth proportional to 77,983.70, 116,866.20 and 68,579.60 is: 102,773.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,983.70 : 116,866.20 = 68,579.60 : x
  2. Step 2: Convert to fraction form
    77,983.70/116,866.20 = 68,579.60/x
  3. Step 3: Cross multiply
    77,983.70x = 116,866.20 × 68,579.60
  4. Step 4: Simplify right side
    77,983.70x = 8,014,637,249.52
  5. Step 5: Solve for x
    x = 8,014,637,249.52/77,983.70
  6. Step 6: Final answer
    x = 102,773.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.