Home / 47,687.49-71,520.30-21,399.75

Finding the Fourth Proportional to 47,687.49, 71,520.30 and 21,399.75

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Solution

The fourth proportional to 47,687.49, 71,520.30 and 21,399.75 is: 32,094.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,687.49 : 71,520.30 = 21,399.75 : x
  2. Step 2: Convert to fraction form
    47,687.49/71,520.30 = 21,399.75/x
  3. Step 3: Cross multiply
    47,687.49x = 71,520.30 × 21,399.75
  4. Step 4: Simplify right side
    47,687.49x = 1,530,516,539.93
  5. Step 5: Solve for x
    x = 1,530,516,539.93/47,687.49
  6. Step 6: Final answer
    x = 32,094.72

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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.