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Finding the Fourth Proportional to 71,861.76, 107,848.32 and 36,798.72

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Solution

The fourth proportional to 71,861.76, 107,848.32 and 36,798.72 is: 55,226.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,861.76 : 107,848.32 = 36,798.72 : x
  2. Step 2: Convert to fraction form
    71,861.76/107,848.32 = 36,798.72/x
  3. Step 3: Cross multiply
    71,861.76x = 107,848.32 × 36,798.72
  4. Step 4: Simplify right side
    71,861.76x = 3,968,680,130.15
  5. Step 5: Solve for x
    x = 3,968,680,130.15/71,861.76
  6. Step 6: Final answer
    x = 55,226.59

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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.