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Finding the Fourth Proportional to 68,706.74, 103,069.84 and 21,948.68

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Solution

The fourth proportional to 68,706.74, 103,069.84 and 21,948.68 is: 32,926.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.74 : 103,069.84 = 21,948.68 : x
  2. Step 2: Convert to fraction form
    68,706.74/103,069.84 = 21,948.68/x
  3. Step 3: Cross multiply
    68,706.74x = 103,069.84 × 21,948.68
  4. Step 4: Simplify right side
    68,706.74x = 2,262,246,935.81
  5. Step 5: Solve for x
    x = 2,262,246,935.81/68,706.74
  6. Step 6: Final answer
    x = 32,926.13

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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.