Home / 51,989.72-71,661.18-40,639.18

Finding the Fourth Proportional to 51,989.72, 71,661.18 and 40,639.18

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Solution

The fourth proportional to 51,989.72, 71,661.18 and 40,639.18 is: 56,015.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,989.72 : 71,661.18 = 40,639.18 : x
  2. Step 2: Convert to fraction form
    51,989.72/71,661.18 = 40,639.18/x
  3. Step 3: Cross multiply
    51,989.72x = 71,661.18 × 40,639.18
  4. Step 4: Simplify right side
    51,989.72x = 2,912,251,593.03
  5. Step 5: Solve for x
    x = 2,912,251,593.03/51,989.72
  6. Step 6: Final answer
    x = 56,015.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.