Home / 55,109.39-82,640.77-19,579.60

Finding the Fourth Proportional to 55,109.39, 82,640.77 and 19,579.60

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Solution

The fourth proportional to 55,109.39, 82,640.77 and 19,579.60 is: 29,361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,109.39 : 82,640.77 = 19,579.60 : x
  2. Step 2: Convert to fraction form
    55,109.39/82,640.77 = 19,579.60/x
  3. Step 3: Cross multiply
    55,109.39x = 82,640.77 × 19,579.60
  4. Step 4: Simplify right side
    55,109.39x = 1,618,073,220.29
  5. Step 5: Solve for x
    x = 1,618,073,220.29/55,109.39
  6. Step 6: Final answer
    x = 29,361.12

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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.