Home / 51,390.26-77,074.80-19,789.48

Finding the Fourth Proportional to 51,390.26, 77,074.80 and 19,789.48

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Solution

The fourth proportional to 51,390.26, 77,074.80 and 19,789.48 is: 29,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,390.26 : 77,074.80 = 19,789.48 : x
  2. Step 2: Convert to fraction form
    51,390.26/77,074.80 = 19,789.48/x
  3. Step 3: Cross multiply
    51,390.26x = 77,074.80 × 19,789.48
  4. Step 4: Simplify right side
    51,390.26x = 1,525,270,020.42
  5. Step 5: Solve for x
    x = 1,525,270,020.42/51,390.26
  6. Step 6: Final answer
    x = 29,680.14

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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.