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Finding the Fourth Proportional to 69,244.51, 103,851.77 and 18,642.28

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Solution

The fourth proportional to 69,244.51, 103,851.77 and 18,642.28 is: 27,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,244.51 : 103,851.77 = 18,642.28 : x
  2. Step 2: Convert to fraction form
    69,244.51/103,851.77 = 18,642.28/x
  3. Step 3: Cross multiply
    69,244.51x = 103,851.77 × 18,642.28
  4. Step 4: Simplify right side
    69,244.51x = 1,936,033,774.84
  5. Step 5: Solve for x
    x = 1,936,033,774.84/69,244.51
  6. Step 6: Final answer
    x = 27,959.38

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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.