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Finding the Fourth Proportional to 54,601.92, 81,898.88 and 21,315.68

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Solution

The fourth proportional to 54,601.92, 81,898.88 and 21,315.68 is: 31,971.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,601.92 : 81,898.88 = 21,315.68 : x
  2. Step 2: Convert to fraction form
    54,601.92/81,898.88 = 21,315.68/x
  3. Step 3: Cross multiply
    54,601.92x = 81,898.88 × 21,315.68
  4. Step 4: Simplify right side
    54,601.92x = 1,745,730,318.44
  5. Step 5: Solve for x
    x = 1,745,730,318.44/54,601.92
  6. Step 6: Final answer
    x = 31,971.96

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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.