Home / 54,433.36-81,655.20-21,156

Finding the Fourth Proportional to 54,433.36, 81,655.20 and 21,156

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Solution

The fourth proportional to 54,433.36, 81,655.20 and 21,156 is: 31,736.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,433.36 : 81,655.20 = 21,156 : x
  2. Step 2: Convert to fraction form
    54,433.36/81,655.20 = 21,156/x
  3. Step 3: Cross multiply
    54,433.36x = 81,655.20 × 21,156
  4. Step 4: Simplify right side
    54,433.36x = 1,727,497,411.20
  5. Step 5: Solve for x
    x = 1,727,497,411.20/54,433.36
  6. Step 6: Final answer
    x = 31,736.01

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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.