Home / 48,128.20-72,204.59-18,538.09

Finding the Fourth Proportional to 48,128.20, 72,204.59 and 18,538.09

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Solution

The fourth proportional to 48,128.20, 72,204.59 and 18,538.09 is: 27,811.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,128.20 : 72,204.59 = 18,538.09 : x
  2. Step 2: Convert to fraction form
    48,128.20/72,204.59 = 18,538.09/x
  3. Step 3: Cross multiply
    48,128.20x = 72,204.59 × 18,538.09
  4. Step 4: Simplify right side
    48,128.20x = 1,338,535,053.67
  5. Step 5: Solve for x
    x = 1,338,535,053.67/48,128.20
  6. Step 6: Final answer
    x = 27,811.87

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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.