Home / 54,435.84-81,671.94-21,156.99

Finding the Fourth Proportional to 54,435.84, 81,671.94 and 21,156.99

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Solution

The fourth proportional to 54,435.84, 81,671.94 and 21,156.99 is: 31,742.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,435.84 : 81,671.94 = 21,156.99 : x
  2. Step 2: Convert to fraction form
    54,435.84/81,671.94 = 21,156.99/x
  3. Step 3: Cross multiply
    54,435.84x = 81,671.94 × 21,156.99
  4. Step 4: Simplify right side
    54,435.84x = 1,727,932,417.86
  5. Step 5: Solve for x
    x = 1,727,932,417.86/54,435.84
  6. Step 6: Final answer
    x = 31,742.55

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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.