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Finding the Fourth Proportional to 84,573, 126,658.62 and 54,898.92

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Solution

The fourth proportional to 84,573, 126,658.62 and 54,898.92 is: 82,217.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,573 : 126,658.62 = 54,898.92 : x
  2. Step 2: Convert to fraction form
    84,573/126,658.62 = 54,898.92/x
  3. Step 3: Cross multiply
    84,573x = 126,658.62 × 54,898.92
  4. Step 4: Simplify right side
    84,573x = 6,953,421,446.69
  5. Step 5: Solve for x
    x = 6,953,421,446.69/84,573
  6. Step 6: Final answer
    x = 82,217.98

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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.