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Finding the Fourth Proportional to 84,605.05, 126,802.27 and 54,540.01

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Solution

The fourth proportional to 84,605.05, 126,802.27 and 54,540.01 is: 81,742.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,605.05 : 126,802.27 = 54,540.01 : x
  2. Step 2: Convert to fraction form
    84,605.05/126,802.27 = 54,540.01/x
  3. Step 3: Cross multiply
    84,605.05x = 126,802.27 × 54,540.01
  4. Step 4: Simplify right side
    84,605.05x = 6,915,797,073.82
  5. Step 5: Solve for x
    x = 6,915,797,073.82/84,605.05
  6. Step 6: Final answer
    x = 81,742.13

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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.