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Finding the Fourth Proportional to 54,335.88, 81,488.03 and 21,048.53

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Solution

The fourth proportional to 54,335.88, 81,488.03 and 21,048.53 is: 31,566.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,335.88 : 81,488.03 = 21,048.53 : x
  2. Step 2: Convert to fraction form
    54,335.88/81,488.03 = 21,048.53/x
  3. Step 3: Cross multiply
    54,335.88x = 81,488.03 × 21,048.53
  4. Step 4: Simplify right side
    54,335.88x = 1,715,202,731.41
  5. Step 5: Solve for x
    x = 1,715,202,731.41/54,335.88
  6. Step 6: Final answer
    x = 31,566.67

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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.