Home / 57,550.40-86,331.36-20,605.76

Finding the Fourth Proportional to 57,550.40, 86,331.36 and 20,605.76

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Solution

The fourth proportional to 57,550.40, 86,331.36 and 20,605.76 is: 30,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,550.40 : 86,331.36 = 20,605.76 : x
  2. Step 2: Convert to fraction form
    57,550.40/86,331.36 = 20,605.76/x
  3. Step 3: Cross multiply
    57,550.40x = 86,331.36 × 20,605.76
  4. Step 4: Simplify right side
    57,550.40x = 1,778,923,284.63
  5. Step 5: Solve for x
    x = 1,778,923,284.63/57,550.40
  6. Step 6: Final answer
    x = 30,910.70

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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.