Home / 85,910.50-128,734.20-35,963.38

Finding the Fourth Proportional to 85,910.50, 128,734.20 and 35,963.38

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Solution

The fourth proportional to 85,910.50, 128,734.20 and 35,963.38 is: 53,890.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,910.50 : 128,734.20 = 35,963.38 : x
  2. Step 2: Convert to fraction form
    85,910.50/128,734.20 = 35,963.38/x
  3. Step 3: Cross multiply
    85,910.50x = 128,734.20 × 35,963.38
  4. Step 4: Simplify right side
    85,910.50x = 4,629,716,953.60
  5. Step 5: Solve for x
    x = 4,629,716,953.60/85,910.50
  6. Step 6: Final answer
    x = 53,890.00

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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.