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Finding the Fourth Proportional to 77,213.76, 115,790.88 and 32,861.52

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Solution

The fourth proportional to 77,213.76, 115,790.88 and 32,861.52 is: 49,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,213.76 : 115,790.88 = 32,861.52 : x
  2. Step 2: Convert to fraction form
    77,213.76/115,790.88 = 32,861.52/x
  3. Step 3: Cross multiply
    77,213.76x = 115,790.88 × 32,861.52
  4. Step 4: Simplify right side
    77,213.76x = 3,805,064,318.94
  5. Step 5: Solve for x
    x = 3,805,064,318.94/77,213.76
  6. Step 6: Final answer
    x = 49,279.61

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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.