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Finding the Fourth Proportional to 54,612.81, 81,894.09 and 28,335.99

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Solution

The fourth proportional to 54,612.81, 81,894.09 and 28,335.99 is: 42,490.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,612.81 : 81,894.09 = 28,335.99 : x
  2. Step 2: Convert to fraction form
    54,612.81/81,894.09 = 28,335.99/x
  3. Step 3: Cross multiply
    54,612.81x = 81,894.09 × 28,335.99
  4. Step 4: Simplify right side
    54,612.81x = 2,320,550,115.30
  5. Step 5: Solve for x
    x = 2,320,550,115.30/54,612.81
  6. Step 6: Final answer
    x = 42,490.95

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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.