Home / 47,977.38-71,970.39-12,916.26

Finding the Fourth Proportional to 47,977.38, 71,970.39 and 12,916.26

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Solution

The fourth proportional to 47,977.38, 71,970.39 and 12,916.26 is: 19,375.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,977.38 : 71,970.39 = 12,916.26 : x
  2. Step 2: Convert to fraction form
    47,977.38/71,970.39 = 12,916.26/x
  3. Step 3: Cross multiply
    47,977.38x = 71,970.39 × 12,916.26
  4. Step 4: Simplify right side
    47,977.38x = 929,588,269.54
  5. Step 5: Solve for x
    x = 929,588,269.54/47,977.38
  6. Step 6: Final answer
    x = 19,375.55

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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.