Home / 47,399.29-71,111.90-20,740.43

Finding the Fourth Proportional to 47,399.29, 71,111.90 and 20,740.43

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Solution

The fourth proportional to 47,399.29, 71,111.90 and 20,740.43 is: 31,116.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,399.29 : 71,111.90 = 20,740.43 : x
  2. Step 2: Convert to fraction form
    47,399.29/71,111.90 = 20,740.43/x
  3. Step 3: Cross multiply
    47,399.29x = 71,111.90 × 20,740.43
  4. Step 4: Simplify right side
    47,399.29x = 1,474,891,280.41
  5. Step 5: Solve for x
    x = 1,474,891,280.41/47,399.29
  6. Step 6: Final answer
    x = 31,116.32

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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.