Home / 85,936.40-128,873.78-29,761.42

Finding the Fourth Proportional to 85,936.40, 128,873.78 and 29,761.42

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Solution

The fourth proportional to 85,936.40, 128,873.78 and 29,761.42 is: 44,631.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,936.40 : 128,873.78 = 29,761.42 : x
  2. Step 2: Convert to fraction form
    85,936.40/128,873.78 = 29,761.42/x
  3. Step 3: Cross multiply
    85,936.40x = 128,873.78 × 29,761.42
  4. Step 4: Simplify right side
    85,936.40x = 3,835,466,693.57
  5. Step 5: Solve for x
    x = 3,835,466,693.57/85,936.40
  6. Step 6: Final answer
    x = 44,631.46

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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.