Home / 87,709.02-131,562.37-21,148.62

Finding the Fourth Proportional to 87,709.02, 131,562.37 and 21,148.62

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Solution

The fourth proportional to 87,709.02, 131,562.37 and 21,148.62 is: 31,722.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,709.02 : 131,562.37 = 21,148.62 : x
  2. Step 2: Convert to fraction form
    87,709.02/131,562.37 = 21,148.62/x
  3. Step 3: Cross multiply
    87,709.02x = 131,562.37 × 21,148.62
  4. Step 4: Simplify right side
    87,709.02x = 2,782,362,463.69
  5. Step 5: Solve for x
    x = 2,782,362,463.69/87,709.02
  6. Step 6: Final answer
    x = 31,722.65

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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.