Home / 51,378.33-77,069.07-13,938.25

Finding the Fourth Proportional to 51,378.33, 77,069.07 and 13,938.25

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Solution

The fourth proportional to 51,378.33, 77,069.07 and 13,938.25 is: 20,907.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,378.33 : 77,069.07 = 13,938.25 : x
  2. Step 2: Convert to fraction form
    51,378.33/77,069.07 = 13,938.25/x
  3. Step 3: Cross multiply
    51,378.33x = 77,069.07 × 13,938.25
  4. Step 4: Simplify right side
    51,378.33x = 1,074,207,964.93
  5. Step 5: Solve for x
    x = 1,074,207,964.93/51,378.33
  6. Step 6: Final answer
    x = 20,907.80

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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.