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Finding the Fourth Proportional to 84,603.05, 126,799.28 and 54,538.01

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Solution

The fourth proportional to 84,603.05, 126,799.28 and 54,538.01 is: 81,739.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,603.05 : 126,799.28 = 54,538.01 : x
  2. Step 2: Convert to fraction form
    84,603.05/126,799.28 = 54,538.01/x
  3. Step 3: Cross multiply
    84,603.05x = 126,799.28 × 54,538.01
  4. Step 4: Simplify right side
    84,603.05x = 6,915,380,127.94
  5. Step 5: Solve for x
    x = 6,915,380,127.94/84,603.05
  6. Step 6: Final answer
    x = 81,739.14

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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.