Home / 57,705.21-86,555.45-20,273.76

Finding the Fourth Proportional to 57,705.21, 86,555.45 and 20,273.76

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Solution

The fourth proportional to 57,705.21, 86,555.45 and 20,273.76 is: 30,409.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,705.21 : 86,555.45 = 20,273.76 : x
  2. Step 2: Convert to fraction form
    57,705.21/86,555.45 = 20,273.76/x
  3. Step 3: Cross multiply
    57,705.21x = 86,555.45 × 20,273.76
  4. Step 4: Simplify right side
    57,705.21x = 1,754,804,470.68
  5. Step 5: Solve for x
    x = 1,754,804,470.68/57,705.21
  6. Step 6: Final answer
    x = 30,409.81

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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.