Home / 51,857.40-77,787.70-20,266.12

Finding the Fourth Proportional to 51,857.40, 77,787.70 and 20,266.12

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Solution

The fourth proportional to 51,857.40, 77,787.70 and 20,266.12 is: 30,399.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,857.40 : 77,787.70 = 20,266.12 : x
  2. Step 2: Convert to fraction form
    51,857.40/77,787.70 = 20,266.12/x
  3. Step 3: Cross multiply
    51,857.40x = 77,787.70 × 20,266.12
  4. Step 4: Simplify right side
    51,857.40x = 1,576,454,862.72
  5. Step 5: Solve for x
    x = 1,576,454,862.72/51,857.40
  6. Step 6: Final answer
    x = 30,399.81

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1.5x scale

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.