Home / 54,134.63-81,214.25-20,411.09

Finding the Fourth Proportional to 54,134.63, 81,214.25 and 20,411.09

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Solution

The fourth proportional to 54,134.63, 81,214.25 and 20,411.09 is: 30,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,134.63 : 81,214.25 = 20,411.09 : x
  2. Step 2: Convert to fraction form
    54,134.63/81,214.25 = 20,411.09/x
  3. Step 3: Cross multiply
    54,134.63x = 81,214.25 × 20,411.09
  4. Step 4: Simplify right side
    54,134.63x = 1,657,671,162.46
  5. Step 5: Solve for x
    x = 1,657,671,162.46/54,134.63
  6. Step 6: Final answer
    x = 30,621.27

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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.