Home / 39,960.77-55,144.19-22,055.51

Finding the Fourth Proportional to 39,960.77, 55,144.19 and 22,055.51

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Solution

The fourth proportional to 39,960.77, 55,144.19 and 22,055.51 is: 30,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,960.77 : 55,144.19 = 22,055.51 : x
  2. Step 2: Convert to fraction form
    39,960.77/55,144.19 = 22,055.51/x
  3. Step 3: Cross multiply
    39,960.77x = 55,144.19 × 22,055.51
  4. Step 4: Simplify right side
    39,960.77x = 1,216,233,426.99
  5. Step 5: Solve for x
    x = 1,216,233,426.99/39,960.77
  6. Step 6: Final answer
    x = 30,435.69

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Half scale
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Double scale
Find fourth proportional to 39,961.77, 55,145.57 and 22,056.51
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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.