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Finding the Fourth Proportional to 86,003.70, 128,896.20 and 41,534.70

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Solution

The fourth proportional to 86,003.70, 128,896.20 and 41,534.70 is: 62,249.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,003.70 : 128,896.20 = 41,534.70 : x
  2. Step 2: Convert to fraction form
    86,003.70/128,896.20 = 41,534.70/x
  3. Step 3: Cross multiply
    86,003.70x = 128,896.20 × 41,534.70
  4. Step 4: Simplify right side
    86,003.70x = 5,353,664,998.14
  5. Step 5: Solve for x
    x = 5,353,664,998.14/86,003.70
  6. Step 6: Final answer
    x = 62,249.24

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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.