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Finding the Fourth Proportional to 32,755.70, 45,212.60 and 21,270.30

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Solution

The fourth proportional to 32,755.70, 45,212.60 and 21,270.30 is: 29,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,755.70 : 45,212.60 = 21,270.30 : x
  2. Step 2: Convert to fraction form
    32,755.70/45,212.60 = 21,270.30/x
  3. Step 3: Cross multiply
    32,755.70x = 45,212.60 × 21,270.30
  4. Step 4: Simplify right side
    32,755.70x = 961,685,459.43
  5. Step 5: Solve for x
    x = 961,685,459.43/32,755.70
  6. Step 6: Final answer
    x = 29,359.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.