Home / 49,976.80-74,965.20-13,040.80

Finding the Fourth Proportional to 49,976.80, 74,965.20 and 13,040.80

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Solution

The fourth proportional to 49,976.80, 74,965.20 and 13,040.80 is: 19,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,976.80 : 74,965.20 = 13,040.80 : x
  2. Step 2: Convert to fraction form
    49,976.80/74,965.20 = 13,040.80/x
  3. Step 3: Cross multiply
    49,976.80x = 74,965.20 × 13,040.80
  4. Step 4: Simplify right side
    49,976.80x = 977,606,180.16
  5. Step 5: Solve for x
    x = 977,606,180.16/49,976.80
  6. Step 6: Final answer
    x = 19,561.20

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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.