Home / 45,424.74-68,139.82-19,131.52

Finding the Fourth Proportional to 45,424.74, 68,139.82 and 19,131.52

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Solution

The fourth proportional to 45,424.74, 68,139.82 and 19,131.52 is: 28,698.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,424.74 : 68,139.82 = 19,131.52 : x
  2. Step 2: Convert to fraction form
    45,424.74/68,139.82 = 19,131.52/x
  3. Step 3: Cross multiply
    45,424.74x = 68,139.82 × 19,131.52
  4. Step 4: Simplify right side
    45,424.74x = 1,303,618,329.13
  5. Step 5: Solve for x
    x = 1,303,618,329.13/45,424.74
  6. Step 6: Final answer
    x = 28,698.42

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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.