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Finding the Fourth Proportional to 54,615.74, 81,928.13 and 14,640.39

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Solution

The fourth proportional to 54,615.74, 81,928.13 and 14,640.39 is: 21,961.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,615.74 : 81,928.13 = 14,640.39 : x
  2. Step 2: Convert to fraction form
    54,615.74/81,928.13 = 14,640.39/x
  3. Step 3: Cross multiply
    54,615.74x = 81,928.13 × 14,640.39
  4. Step 4: Simplify right side
    54,615.74x = 1,199,459,701.97
  5. Step 5: Solve for x
    x = 1,199,459,701.97/54,615.74
  6. Step 6: Final answer
    x = 21,961.80

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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.