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Finding the Fourth Proportional to 68,853.32, 103,279.98 and 22,139

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Solution

The fourth proportional to 68,853.32, 103,279.98 and 22,139 is: 33,208.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,853.32 : 103,279.98 = 22,139 : x
  2. Step 2: Convert to fraction form
    68,853.32/103,279.98 = 22,139/x
  3. Step 3: Cross multiply
    68,853.32x = 103,279.98 × 22,139
  4. Step 4: Simplify right side
    68,853.32x = 2,286,515,477.22
  5. Step 5: Solve for x
    x = 2,286,515,477.22/68,853.32
  6. Step 6: Final answer
    x = 33,208.50

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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.