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Finding the Fourth Proportional to 54,123.84, 81,185.76 and 17,187.84

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Solution

The fourth proportional to 54,123.84, 81,185.76 and 17,187.84 is: 25,781.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,123.84 : 81,185.76 = 17,187.84 : x
  2. Step 2: Convert to fraction form
    54,123.84/81,185.76 = 17,187.84/x
  3. Step 3: Cross multiply
    54,123.84x = 81,185.76 × 17,187.84
  4. Step 4: Simplify right side
    54,123.84x = 1,395,407,853.16
  5. Step 5: Solve for x
    x = 1,395,407,853.16/54,123.84
  6. Step 6: Final answer
    x = 25,781.76

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1.5x scale

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.