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Finding the Fourth Proportional to 71,861.65, 107,805.44 and 29,718.83

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Solution

The fourth proportional to 71,861.65, 107,805.44 and 29,718.83 is: 44,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.65 : 107,805.44 = 29,718.83 : x
  2. Step 2: Convert to fraction form
    71,861.65/107,805.44 = 29,718.83/x
  3. Step 3: Cross multiply
    71,861.65x = 107,805.44 × 29,718.83
  4. Step 4: Simplify right side
    71,861.65x = 3,203,851,888.25
  5. Step 5: Solve for x
    x = 3,203,851,888.25/71,861.65
  6. Step 6: Final answer
    x = 44,583.61

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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.