Home / 53,300.20-79,928.70-18,221.80

Finding the Fourth Proportional to 53,300.20, 79,928.70 and 18,221.80

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Solution

The fourth proportional to 53,300.20, 79,928.70 and 18,221.80 is: 27,325.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,300.20 : 79,928.70 = 18,221.80 : x
  2. Step 2: Convert to fraction form
    53,300.20/79,928.70 = 18,221.80/x
  3. Step 3: Cross multiply
    53,300.20x = 79,928.70 × 18,221.80
  4. Step 4: Simplify right side
    53,300.20x = 1,456,444,785.66
  5. Step 5: Solve for x
    x = 1,456,444,785.66/53,300.20
  6. Step 6: Final answer
    x = 27,325.32

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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.