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Finding the Fourth Proportional to 85,968.70, 128,843.70 and 41,499.70

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Solution

The fourth proportional to 85,968.70, 128,843.70 and 41,499.70 is: 62,196.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968.70 : 128,843.70 = 41,499.70 : x
  2. Step 2: Convert to fraction form
    85,968.70/128,843.70 = 41,499.70/x
  3. Step 3: Cross multiply
    85,968.70x = 128,843.70 × 41,499.70
  4. Step 4: Simplify right side
    85,968.70x = 5,346,974,896.89
  5. Step 5: Solve for x
    x = 5,346,974,896.89/85,968.70
  6. Step 6: Final answer
    x = 62,196.76

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1.5x scale

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.