Home / 47,136.89-70,705.33-13,857.23

Finding the Fourth Proportional to 47,136.89, 70,705.33 and 13,857.23

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Solution

The fourth proportional to 47,136.89, 70,705.33 and 13,857.23 is: 20,785.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,136.89 : 70,705.33 = 13,857.23 : x
  2. Step 2: Convert to fraction form
    47,136.89/70,705.33 = 13,857.23/x
  3. Step 3: Cross multiply
    47,136.89x = 70,705.33 × 13,857.23
  4. Step 4: Simplify right side
    47,136.89x = 979,780,162.16
  5. Step 5: Solve for x
    x = 979,780,162.16/47,136.89
  6. Step 6: Final answer
    x = 20,785.85

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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.