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Finding the Fourth Proportional to 68,685.57, 103,030.18 and 21,938.45

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Solution

The fourth proportional to 68,685.57, 103,030.18 and 21,938.45 is: 32,908.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,685.57 : 103,030.18 = 21,938.45 : x
  2. Step 2: Convert to fraction form
    68,685.57/103,030.18 = 21,938.45/x
  3. Step 3: Cross multiply
    68,685.57x = 103,030.18 × 21,938.45
  4. Step 4: Simplify right side
    68,685.57x = 2,260,321,882.42
  5. Step 5: Solve for x
    x = 2,260,321,882.42/68,685.57
  6. Step 6: Final answer
    x = 32,908.25

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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.