Home / 85,864.14-128,772.96-35,934

Finding the Fourth Proportional to 85,864.14, 128,772.96 and 35,934

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Solution

The fourth proportional to 85,864.14, 128,772.96 and 35,934 is: 53,891.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864.14 : 128,772.96 = 35,934 : x
  2. Step 2: Convert to fraction form
    85,864.14/128,772.96 = 35,934/x
  3. Step 3: Cross multiply
    85,864.14x = 128,772.96 × 35,934
  4. Step 4: Simplify right side
    85,864.14x = 4,627,327,544.64
  5. Step 5: Solve for x
    x = 4,627,327,544.64/85,864.14
  6. Step 6: Final answer
    x = 53,891.27

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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.