Home / 85,934.78-128,887.30-22,755.81

Finding the Fourth Proportional to 85,934.78, 128,887.30 and 22,755.81

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Solution

The fourth proportional to 85,934.78, 128,887.30 and 22,755.81 is: 34,129.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934.78 : 128,887.30 = 22,755.81 : x
  2. Step 2: Convert to fraction form
    85,934.78/128,887.30 = 22,755.81/x
  3. Step 3: Cross multiply
    85,934.78x = 128,887.30 × 22,755.81
  4. Step 4: Simplify right side
    85,934.78x = 2,932,934,910.21
  5. Step 5: Solve for x
    x = 2,932,934,910.21/85,934.78
  6. Step 6: Final answer
    x = 34,129.78

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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.