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Finding the Fourth Proportional to 68,526.84, 102,768.39 and 21,768.78

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Solution

The fourth proportional to 68,526.84, 102,768.39 and 21,768.78 is: 32,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,526.84 : 102,768.39 = 21,768.78 : x
  2. Step 2: Convert to fraction form
    68,526.84/102,768.39 = 21,768.78/x
  3. Step 3: Cross multiply
    68,526.84x = 102,768.39 × 21,768.78
  4. Step 4: Simplify right side
    68,526.84x = 2,237,142,472.86
  5. Step 5: Solve for x
    x = 2,237,142,472.86/68,526.84
  6. Step 6: Final answer
    x = 32,646.22

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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.