Home / 49,418.36-74,127.69-11,978.29

Finding the Fourth Proportional to 49,418.36, 74,127.69 and 11,978.29

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Solution

The fourth proportional to 49,418.36, 74,127.69 and 11,978.29 is: 17,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,418.36 : 74,127.69 = 11,978.29 : x
  2. Step 2: Convert to fraction form
    49,418.36/74,127.69 = 11,978.29/x
  3. Step 3: Cross multiply
    49,418.36x = 74,127.69 × 11,978.29
  4. Step 4: Simplify right side
    49,418.36x = 887,922,967.85
  5. Step 5: Solve for x
    x = 887,922,967.85/49,418.36
  6. Step 6: Final answer
    x = 17,967.47

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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.