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Finding the Fourth Proportional to 84,260.64, 126,206.64 and 51,359.52

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Solution

The fourth proportional to 84,260.64, 126,206.64 and 51,359.52 is: 76,926.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,260.64 : 126,206.64 = 51,359.52 : x
  2. Step 2: Convert to fraction form
    84,260.64/126,206.64 = 51,359.52/x
  3. Step 3: Cross multiply
    84,260.64x = 126,206.64 × 51,359.52
  4. Step 4: Simplify right side
    84,260.64x = 6,481,912,451.21
  5. Step 5: Solve for x
    x = 6,481,912,451.21/84,260.64
  6. Step 6: Final answer
    x = 76,926.93

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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.