Home / 47,136.32-70,716.62-13,857.47

Finding the Fourth Proportional to 47,136.32, 70,716.62 and 13,857.47

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Solution

The fourth proportional to 47,136.32, 70,716.62 and 13,857.47 is: 20,789.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,136.32 : 70,716.62 = 13,857.47 : x
  2. Step 2: Convert to fraction form
    47,136.32/70,716.62 = 13,857.47/x
  3. Step 3: Cross multiply
    47,136.32x = 70,716.62 × 13,857.47
  4. Step 4: Simplify right side
    47,136.32x = 979,953,121.21
  5. Step 5: Solve for x
    x = 979,953,121.21/47,136.32
  6. Step 6: Final answer
    x = 20,789.77

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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.