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Finding the Fourth Proportional to 85,796.73, 128,651.19 and 35,863.20

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Solution

The fourth proportional to 85,796.73, 128,651.19 and 35,863.20 is: 53,776.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,796.73 : 128,651.19 = 35,863.20 : x
  2. Step 2: Convert to fraction form
    85,796.73/128,651.19 = 35,863.20/x
  3. Step 3: Cross multiply
    85,796.73x = 128,651.19 × 35,863.20
  4. Step 4: Simplify right side
    85,796.73x = 4,613,843,357.21
  5. Step 5: Solve for x
    x = 4,613,843,357.21/85,796.73
  6. Step 6: Final answer
    x = 53,776.45

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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.