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Finding the Fourth Proportional to 85,798.56, 128,665.44 and 41,410.56

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Solution

The fourth proportional to 85,798.56, 128,665.44 and 41,410.56 is: 62,100.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,798.56 : 128,665.44 = 41,410.56 : x
  2. Step 2: Convert to fraction form
    85,798.56/128,665.44 = 41,410.56/x
  3. Step 3: Cross multiply
    85,798.56x = 128,665.44 × 41,410.56
  4. Step 4: Simplify right side
    85,798.56x = 5,328,107,923.05
  5. Step 5: Solve for x
    x = 5,328,107,923.05/85,798.56
  6. Step 6: Final answer
    x = 62,100.20

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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.