Home / 54,435.17-81,631.76-21,150.86

Finding the Fourth Proportional to 54,435.17, 81,631.76 and 21,150.86

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Solution

The fourth proportional to 54,435.17, 81,631.76 and 21,150.86 is: 31,718.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.17 : 81,631.76 = 21,150.86 : x
  2. Step 2: Convert to fraction form
    54,435.17/81,631.76 = 21,150.86/x
  3. Step 3: Cross multiply
    54,435.17x = 81,631.76 × 21,150.86
  4. Step 4: Simplify right side
    54,435.17x = 1,726,581,572.03
  5. Step 5: Solve for x
    x = 1,726,581,572.03/54,435.17
  6. Step 6: Final answer
    x = 31,718.12

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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.