Home / 51,447.47-77,174.19-19,857.70

Finding the Fourth Proportional to 51,447.47, 77,174.19 and 19,857.70

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Solution

The fourth proportional to 51,447.47, 77,174.19 and 19,857.70 is: 29,787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,447.47 : 77,174.19 = 19,857.70 : x
  2. Step 2: Convert to fraction form
    51,447.47/77,174.19 = 19,857.70/x
  3. Step 3: Cross multiply
    51,447.47x = 77,174.19 × 19,857.70
  4. Step 4: Simplify right side
    51,447.47x = 1,532,501,912.76
  5. Step 5: Solve for x
    x = 1,532,501,912.76/51,447.47
  6. Step 6: Final answer
    x = 29,787.70

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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.