Home / 47,611.72-71,431.55-21,310.61

Finding the Fourth Proportional to 47,611.72, 71,431.55 and 21,310.61

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Solution

The fourth proportional to 47,611.72, 71,431.55 and 21,310.61 is: 31,972.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,611.72 : 71,431.55 = 21,310.61 : x
  2. Step 2: Convert to fraction form
    47,611.72/71,431.55 = 21,310.61/x
  3. Step 3: Cross multiply
    47,611.72x = 71,431.55 × 21,310.61
  4. Step 4: Simplify right side
    47,611.72x = 1,522,249,797.19
  5. Step 5: Solve for x
    x = 1,522,249,797.19/47,611.72
  6. Step 6: Final answer
    x = 31,972.17

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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.