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Finding the Fourth Proportional to 68,865, 103,287.78 and 22,111.80

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Solution

The fourth proportional to 68,865, 103,287.78 and 22,111.80 is: 33,164.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,865 : 103,287.78 = 22,111.80 : x
  2. Step 2: Convert to fraction form
    68,865/103,287.78 = 22,111.80/x
  3. Step 3: Cross multiply
    68,865x = 103,287.78 × 22,111.80
  4. Step 4: Simplify right side
    68,865x = 2,283,878,733.80
  5. Step 5: Solve for x
    x = 2,283,878,733.80/68,865
  6. Step 6: Final answer
    x = 33,164.58

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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.