Home / 54,421.12-81,624.39-21,137.95

Finding the Fourth Proportional to 54,421.12, 81,624.39 and 21,137.95

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Solution

The fourth proportional to 54,421.12, 81,624.39 and 21,137.95 is: 31,704.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,421.12 : 81,624.39 = 21,137.95 : x
  2. Step 2: Convert to fraction form
    54,421.12/81,624.39 = 21,137.95/x
  3. Step 3: Cross multiply
    54,421.12x = 81,624.39 × 21,137.95
  4. Step 4: Simplify right side
    54,421.12x = 1,725,372,274.60
  5. Step 5: Solve for x
    x = 1,725,372,274.60/54,421.12
  6. Step 6: Final answer
    x = 31,704.09

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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.