Home / 54,407.06-81,572.30-21,099.05

Finding the Fourth Proportional to 54,407.06, 81,572.30 and 21,099.05

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Solution

The fourth proportional to 54,407.06, 81,572.30 and 21,099.05 is: 31,633.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,407.06 : 81,572.30 = 21,099.05 : x
  2. Step 2: Convert to fraction form
    54,407.06/81,572.30 = 21,099.05/x
  3. Step 3: Cross multiply
    54,407.06x = 81,572.30 × 21,099.05
  4. Step 4: Simplify right side
    54,407.06x = 1,721,098,036.32
  5. Step 5: Solve for x
    x = 1,721,098,036.32/54,407.06
  6. Step 6: Final answer
    x = 31,633.73

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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.