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Finding the Fourth Proportional to 68,713.92, 103,064.40 and 21,954.24

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Solution

The fourth proportional to 68,713.92, 103,064.40 and 21,954.24 is: 32,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,713.92 : 103,064.40 = 21,954.24 : x
  2. Step 2: Convert to fraction form
    68,713.92/103,064.40 = 21,954.24/x
  3. Step 3: Cross multiply
    68,713.92x = 103,064.40 × 21,954.24
  4. Step 4: Simplify right side
    68,713.92x = 2,262,700,573.06
  5. Step 5: Solve for x
    x = 2,262,700,573.06/68,713.92
  6. Step 6: Final answer
    x = 32,929.29

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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.