Home / 57,098.85-78,778.30-33,220.91

Finding the Fourth Proportional to 57,098.85, 78,778.30 and 33,220.91

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Solution

The fourth proportional to 57,098.85, 78,778.30 and 33,220.91 is: 45,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,098.85 : 78,778.30 = 33,220.91 : x
  2. Step 2: Convert to fraction form
    57,098.85/78,778.30 = 33,220.91/x
  3. Step 3: Cross multiply
    57,098.85x = 78,778.30 × 33,220.91
  4. Step 4: Simplify right side
    57,098.85x = 2,617,086,928.15
  5. Step 5: Solve for x
    x = 2,617,086,928.15/57,098.85
  6. Step 6: Final answer
    x = 45,834.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.