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Finding the Fourth Proportional to 54,699.88, 81,992.22 and 28,376.68

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Solution

The fourth proportional to 54,699.88, 81,992.22 and 28,376.68 is: 42,535.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,699.88 : 81,992.22 = 28,376.68 : x
  2. Step 2: Convert to fraction form
    54,699.88/81,992.22 = 28,376.68/x
  3. Step 3: Cross multiply
    54,699.88x = 81,992.22 × 28,376.68
  4. Step 4: Simplify right side
    54,699.88x = 2,326,666,989.43
  5. Step 5: Solve for x
    x = 2,326,666,989.43/54,699.88
  6. Step 6: Final answer
    x = 42,535.14

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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.