Home / 86,236.70-129,355.62-30,076.59

Finding the Fourth Proportional to 86,236.70, 129,355.62 and 30,076.59

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Solution

The fourth proportional to 86,236.70, 129,355.62 and 30,076.59 is: 45,115.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,236.70 : 129,355.62 = 30,076.59 : x
  2. Step 2: Convert to fraction form
    86,236.70/129,355.62 = 30,076.59/x
  3. Step 3: Cross multiply
    86,236.70x = 129,355.62 × 30,076.59
  4. Step 4: Simplify right side
    86,236.70x = 3,890,576,319.23
  5. Step 5: Solve for x
    x = 3,890,576,319.23/86,236.70
  6. Step 6: Final answer
    x = 45,115.09

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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.