Home / 47,857.72-71,802.57-21,200.09

Finding the Fourth Proportional to 47,857.72, 71,802.57 and 21,200.09

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Solution

The fourth proportional to 47,857.72, 71,802.57 and 21,200.09 is: 31,807.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,857.72 : 71,802.57 = 21,200.09 : x
  2. Step 2: Convert to fraction form
    47,857.72/71,802.57 = 21,200.09/x
  3. Step 3: Cross multiply
    47,857.72x = 71,802.57 × 21,200.09
  4. Step 4: Simplify right side
    47,857.72x = 1,522,220,660.72
  5. Step 5: Solve for x
    x = 1,522,220,660.72/47,857.72
  6. Step 6: Final answer
    x = 31,807.21

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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.