Home / 47,439.72-71,184.20-21,138.35

Finding the Fourth Proportional to 47,439.72, 71,184.20 and 21,138.35

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Solution

The fourth proportional to 47,439.72, 71,184.20 and 21,138.35 is: 31,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,439.72 : 71,184.20 = 21,138.35 : x
  2. Step 2: Convert to fraction form
    47,439.72/71,184.20 = 21,138.35/x
  3. Step 3: Cross multiply
    47,439.72x = 71,184.20 × 21,138.35
  4. Step 4: Simplify right side
    47,439.72x = 1,504,716,072.46
  5. Step 5: Solve for x
    x = 1,504,716,072.46/47,439.72
  6. Step 6: Final answer
    x = 31,718.49

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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.