Home / 54,106.36-81,132.80-31,622.72

Finding the Fourth Proportional to 54,106.36, 81,132.80 and 31,622.72

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Solution

The fourth proportional to 54,106.36, 81,132.80 and 31,622.72 is: 47,418.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,106.36 : 81,132.80 = 31,622.72 : x
  2. Step 2: Convert to fraction form
    54,106.36/81,132.80 = 31,622.72/x
  3. Step 3: Cross multiply
    54,106.36x = 81,132.80 × 31,622.72
  4. Step 4: Simplify right side
    54,106.36x = 2,565,639,253.44
  5. Step 5: Solve for x
    x = 2,565,639,253.44/54,106.36
  6. Step 6: Final answer
    x = 47,418.44

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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.