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Finding the Fourth Proportional to 68,451.70, 102,681.21 and 21,708.22

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Solution

The fourth proportional to 68,451.70, 102,681.21 and 21,708.22 is: 32,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,451.70 : 102,681.21 = 21,708.22 : x
  2. Step 2: Convert to fraction form
    68,451.70/102,681.21 = 21,708.22/x
  3. Step 3: Cross multiply
    68,451.70x = 102,681.21 × 21,708.22
  4. Step 4: Simplify right side
    68,451.70x = 2,229,026,296.55
  5. Step 5: Solve for x
    x = 2,229,026,296.55/68,451.70
  6. Step 6: Final answer
    x = 32,563.49

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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.