Home / 31,985.71-47,977.49-8,611.27

Finding the Fourth Proportional to 31,985.71, 47,977.49 and 8,611.27

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Solution

The fourth proportional to 31,985.71, 47,977.49 and 8,611.27 is: 12,916.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,985.71 : 47,977.49 = 8,611.27 : x
  2. Step 2: Convert to fraction form
    31,985.71/47,977.49 = 8,611.27/x
  3. Step 3: Cross multiply
    31,985.71x = 47,977.49 × 8,611.27
  4. Step 4: Simplify right side
    31,985.71x = 413,147,077.26
  5. Step 5: Solve for x
    x = 413,147,077.26/31,985.71
  6. Step 6: Final answer
    x = 12,916.61

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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.