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Finding the Fourth Proportional to 68,988.88, 103,480.44 and 19,740.88

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Solution

The fourth proportional to 68,988.88, 103,480.44 and 19,740.88 is: 29,610.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,988.88 : 103,480.44 = 19,740.88 : x
  2. Step 2: Convert to fraction form
    68,988.88/103,480.44 = 19,740.88/x
  3. Step 3: Cross multiply
    68,988.88x = 103,480.44 × 19,740.88
  4. Step 4: Simplify right side
    68,988.88x = 2,042,794,948.39
  5. Step 5: Solve for x
    x = 2,042,794,948.39/68,988.88
  6. Step 6: Final answer
    x = 29,610.50

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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.