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Finding the Fourth Proportional to 54,376.68, 81,569.88 and 21,095.94

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Solution

The fourth proportional to 54,376.68, 81,569.88 and 21,095.94 is: 31,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,376.68 : 81,569.88 = 21,095.94 : x
  2. Step 2: Convert to fraction form
    54,376.68/81,569.88 = 21,095.94/x
  3. Step 3: Cross multiply
    54,376.68x = 81,569.88 × 21,095.94
  4. Step 4: Simplify right side
    54,376.68x = 1,720,793,294.29
  5. Step 5: Solve for x
    x = 1,720,793,294.29/54,376.68
  6. Step 6: Final answer
    x = 31,645.80

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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.