Home / 54,531.36-81,738.72-28,209.60

Finding the Fourth Proportional to 54,531.36, 81,738.72 and 28,209.60

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Solution

The fourth proportional to 54,531.36, 81,738.72 and 28,209.60 is: 42,284.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,531.36 : 81,738.72 = 28,209.60 : x
  2. Step 2: Convert to fraction form
    54,531.36/81,738.72 = 28,209.60/x
  3. Step 3: Cross multiply
    54,531.36x = 81,738.72 × 28,209.60
  4. Step 4: Simplify right side
    54,531.36x = 2,305,816,595.71
  5. Step 5: Solve for x
    x = 2,305,816,595.71/54,531.36
  6. Step 6: Final answer
    x = 42,284.23

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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.