Home / 51,763.31-77,648.68-13,812.38

Finding the Fourth Proportional to 51,763.31, 77,648.68 and 13,812.38

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Solution

The fourth proportional to 51,763.31, 77,648.68 and 13,812.38 is: 20,719.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,763.31 : 77,648.68 = 13,812.38 : x
  2. Step 2: Convert to fraction form
    51,763.31/77,648.68 = 13,812.38/x
  3. Step 3: Cross multiply
    51,763.31x = 77,648.68 × 13,812.38
  4. Step 4: Simplify right side
    51,763.31x = 1,072,513,074.66
  5. Step 5: Solve for x
    x = 1,072,513,074.66/51,763.31
  6. Step 6: Final answer
    x = 20,719.56

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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.