Home / 54,487.46-81,709.86-21,203.12

Finding the Fourth Proportional to 54,487.46, 81,709.86 and 21,203.12

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Solution

The fourth proportional to 54,487.46, 81,709.86 and 21,203.12 is: 31,796.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,487.46 : 81,709.86 = 21,203.12 : x
  2. Step 2: Convert to fraction form
    54,487.46/81,709.86 = 21,203.12/x
  3. Step 3: Cross multiply
    54,487.46x = 81,709.86 × 21,203.12
  4. Step 4: Simplify right side
    54,487.46x = 1,732,503,966.76
  5. Step 5: Solve for x
    x = 1,732,503,966.76/54,487.46
  6. Step 6: Final answer
    x = 31,796.38

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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.