Home / 54,053.51-81,083-20,761.91

Finding the Fourth Proportional to 54,053.51, 81,083 and 20,761.91

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Solution

The fourth proportional to 54,053.51, 81,083 and 20,761.91 is: 31,143.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,053.51 : 81,083 = 20,761.91 : x
  2. Step 2: Convert to fraction form
    54,053.51/81,083 = 20,761.91/x
  3. Step 3: Cross multiply
    54,053.51x = 81,083 × 20,761.91
  4. Step 4: Simplify right side
    54,053.51x = 1,683,437,543.12
  5. Step 5: Solve for x
    x = 1,683,437,543.12/54,053.51
  6. Step 6: Final answer
    x = 31,143.91

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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.