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Finding the Fourth Proportional to 54,356.51, 81,531.11 and 14,910.32

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Solution

The fourth proportional to 54,356.51, 81,531.11 and 14,910.32 is: 22,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,356.51 : 81,531.11 = 14,910.32 : x
  2. Step 2: Convert to fraction form
    54,356.51/81,531.11 = 14,910.32/x
  3. Step 3: Cross multiply
    54,356.51x = 81,531.11 × 14,910.32
  4. Step 4: Simplify right side
    54,356.51x = 1,215,654,457.85
  5. Step 5: Solve for x
    x = 1,215,654,457.85/54,356.51
  6. Step 6: Final answer
    x = 22,364.47

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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.