Home / 81,234.52-121,861.50-28,633.12

Finding the Fourth Proportional to 81,234.52, 121,861.50 and 28,633.12

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Solution

The fourth proportional to 81,234.52, 121,861.50 and 28,633.12 is: 42,953.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,234.52 : 121,861.50 = 28,633.12 : x
  2. Step 2: Convert to fraction form
    81,234.52/121,861.50 = 28,633.12/x
  3. Step 3: Cross multiply
    81,234.52x = 121,861.50 × 28,633.12
  4. Step 4: Simplify right side
    81,234.52x = 3,489,274,952.88
  5. Step 5: Solve for x
    x = 3,489,274,952.88/81,234.52
  6. Step 6: Final answer
    x = 42,953.11

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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.