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Finding the Fourth Proportional to 68,031.77, 102,045.77 and 18,112.30

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Solution

The fourth proportional to 68,031.77, 102,045.77 and 18,112.30 is: 27,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,031.77 : 102,045.77 = 18,112.30 : x
  2. Step 2: Convert to fraction form
    68,031.77/102,045.77 = 18,112.30/x
  3. Step 3: Cross multiply
    68,031.77x = 102,045.77 × 18,112.30
  4. Step 4: Simplify right side
    68,031.77x = 1,848,283,599.97
  5. Step 5: Solve for x
    x = 1,848,283,599.97/68,031.77
  6. Step 6: Final answer
    x = 27,167.95

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1.5x scale

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.