Home / 54,981.36-82,416.42-21,688.56

Finding the Fourth Proportional to 54,981.36, 82,416.42 and 21,688.56

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Solution

The fourth proportional to 54,981.36, 82,416.42 and 21,688.56 is: 32,510.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,981.36 : 82,416.42 = 21,688.56 : x
  2. Step 2: Convert to fraction form
    54,981.36/82,416.42 = 21,688.56/x
  3. Step 3: Cross multiply
    54,981.36x = 82,416.42 × 21,688.56
  4. Step 4: Simplify right side
    54,981.36x = 1,787,493,470.16
  5. Step 5: Solve for x
    x = 1,787,493,470.16/54,981.36
  6. Step 6: Final answer
    x = 32,510.90

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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.