Home / 47,420.53-71,149.92-21,107.28

Finding the Fourth Proportional to 47,420.53, 71,149.92 and 21,107.28

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Solution

The fourth proportional to 47,420.53, 71,149.92 and 21,107.28 is: 31,669.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,420.53 : 71,149.92 = 21,107.28 : x
  2. Step 2: Convert to fraction form
    47,420.53/71,149.92 = 21,107.28/x
  3. Step 3: Cross multiply
    47,420.53x = 71,149.92 × 21,107.28
  4. Step 4: Simplify right side
    47,420.53x = 1,501,781,283.42
  5. Step 5: Solve for x
    x = 1,501,781,283.42/47,420.53
  6. Step 6: Final answer
    x = 31,669.43

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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.