Home / 77,138.57-106,456.67-43,150.23

Finding the Fourth Proportional to 77,138.57, 106,456.67 and 43,150.23

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Solution

The fourth proportional to 77,138.57, 106,456.67 and 43,150.23 is: 59,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,138.57 : 106,456.67 = 43,150.23 : x
  2. Step 2: Convert to fraction form
    77,138.57/106,456.67 = 43,150.23/x
  3. Step 3: Cross multiply
    77,138.57x = 106,456.67 × 43,150.23
  4. Step 4: Simplify right side
    77,138.57x = 4,593,629,579.78
  5. Step 5: Solve for x
    x = 4,593,629,579.78/77,138.57
  6. Step 6: Final answer
    x = 59,550.36

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Double scale
Find fourth proportional to 77,139.57, 106,458.05 and 43,151.23
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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.