Home / 51,769.72-77,639.56-20,172.74

Finding the Fourth Proportional to 51,769.72, 77,639.56 and 20,172.74

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Solution

The fourth proportional to 51,769.72, 77,639.56 and 20,172.74 is: 30,253.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,769.72 : 77,639.56 = 20,172.74 : x
  2. Step 2: Convert to fraction form
    51,769.72/77,639.56 = 20,172.74/x
  3. Step 3: Cross multiply
    51,769.72x = 77,639.56 × 20,172.74
  4. Step 4: Simplify right side
    51,769.72x = 1,566,202,218.96
  5. Step 5: Solve for x
    x = 1,566,202,218.96/51,769.72
  6. Step 6: Final answer
    x = 30,253.25

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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.