Home / 51,289.71-76,938.26-19,699.78

Finding the Fourth Proportional to 51,289.71, 76,938.26 and 19,699.78

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Solution

The fourth proportional to 51,289.71, 76,938.26 and 19,699.78 is: 29,551.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,289.71 : 76,938.26 = 19,699.78 : x
  2. Step 2: Convert to fraction form
    51,289.71/76,938.26 = 19,699.78/x
  3. Step 3: Cross multiply
    51,289.71x = 76,938.26 × 19,699.78
  4. Step 4: Simplify right side
    51,289.71x = 1,515,666,865.39
  5. Step 5: Solve for x
    x = 1,515,666,865.39/51,289.71
  6. Step 6: Final answer
    x = 29,551.09

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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.