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Finding the Fourth Proportional to 71,790.60, 107,521.88 and 34,376.96

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Solution

The fourth proportional to 71,790.60, 107,521.88 and 34,376.96 is: 51,486.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,790.60 : 107,521.88 = 34,376.96 : x
  2. Step 2: Convert to fraction form
    71,790.60/107,521.88 = 34,376.96/x
  3. Step 3: Cross multiply
    71,790.60x = 107,521.88 × 34,376.96
  4. Step 4: Simplify right side
    71,790.60x = 3,696,275,053.36
  5. Step 5: Solve for x
    x = 3,696,275,053.36/71,790.60
  6. Step 6: Final answer
    x = 51,486.89

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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.