Home / 47,139.92-70,692.56-13,851.44

Finding the Fourth Proportional to 47,139.92, 70,692.56 and 13,851.44

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Solution

The fourth proportional to 47,139.92, 70,692.56 and 13,851.44 is: 20,772.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,139.92 : 70,692.56 = 13,851.44 : x
  2. Step 2: Convert to fraction form
    47,139.92/70,692.56 = 13,851.44/x
  3. Step 3: Cross multiply
    47,139.92x = 70,692.56 × 13,851.44
  4. Step 4: Simplify right side
    47,139.92x = 979,193,753.29
  5. Step 5: Solve for x
    x = 979,193,753.29/47,139.92
  6. Step 6: Final answer
    x = 20,772.07

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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.