Home / 54,442.50-81,668.94-21,165.12

Finding the Fourth Proportional to 54,442.50, 81,668.94 and 21,165.12

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Solution

The fourth proportional to 54,442.50, 81,668.94 and 21,165.12 is: 31,749.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,442.50 : 81,668.94 = 21,165.12 : x
  2. Step 2: Convert to fraction form
    54,442.50/81,668.94 = 21,165.12/x
  3. Step 3: Cross multiply
    54,442.50x = 81,668.94 × 21,165.12
  4. Step 4: Simplify right side
    54,442.50x = 1,728,532,915.37
  5. Step 5: Solve for x
    x = 1,728,532,915.37/54,442.50
  6. Step 6: Final answer
    x = 31,749.70

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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.