Home / 80,640.13-111,285.80-44,339.70

Finding the Fourth Proportional to 80,640.13, 111,285.80 and 44,339.70

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Solution

The fourth proportional to 80,640.13, 111,285.80 and 44,339.70 is: 61,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640.13 : 111,285.80 = 44,339.70 : x
  2. Step 2: Convert to fraction form
    80,640.13/111,285.80 = 44,339.70/x
  3. Step 3: Cross multiply
    80,640.13x = 111,285.80 × 44,339.70
  4. Step 4: Simplify right side
    80,640.13x = 4,934,378,208.13
  5. Step 5: Solve for x
    x = 4,934,378,208.13/80,640.13
  6. Step 6: Final answer
    x = 61,190.11

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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.