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Finding the Fourth Proportional to 84,306, 126,279.12 and 54,635.76

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Solution

The fourth proportional to 84,306, 126,279.12 and 54,635.76 is: 81,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,306 : 126,279.12 = 54,635.76 : x
  2. Step 2: Convert to fraction form
    84,306/126,279.12 = 54,635.76/x
  3. Step 3: Cross multiply
    84,306x = 126,279.12 × 54,635.76
  4. Step 4: Simplify right side
    84,306x = 6,899,355,693.33
  5. Step 5: Solve for x
    x = 6,899,355,693.33/84,306
  6. Step 6: Final answer
    x = 81,837.07

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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.