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Finding the Fourth Proportional to 67,570.32, 101,355.60 and 20,822.88

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Solution

The fourth proportional to 67,570.32, 101,355.60 and 20,822.88 is: 31,234.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,570.32 : 101,355.60 = 20,822.88 : x
  2. Step 2: Convert to fraction form
    67,570.32/101,355.60 = 20,822.88/x
  3. Step 3: Cross multiply
    67,570.32x = 101,355.60 × 20,822.88
  4. Step 4: Simplify right side
    67,570.32x = 2,110,515,496.13
  5. Step 5: Solve for x
    x = 2,110,515,496.13/67,570.32
  6. Step 6: Final answer
    x = 31,234.36

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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.