Home / 87,709.34-131,562.86-21,148.94

Finding the Fourth Proportional to 87,709.34, 131,562.86 and 21,148.94

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Solution

The fourth proportional to 87,709.34, 131,562.86 and 21,148.94 is: 31,723.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,709.34 : 131,562.86 = 21,148.94 : x
  2. Step 2: Convert to fraction form
    87,709.34/131,562.86 = 21,148.94/x
  3. Step 3: Cross multiply
    87,709.34x = 131,562.86 × 21,148.94
  4. Step 4: Simplify right side
    87,709.34x = 2,782,415,032.37
  5. Step 5: Solve for x
    x = 2,782,415,032.37/87,709.34
  6. Step 6: Final answer
    x = 31,723.13

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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.