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Finding the Fourth Proportional to 89,374.70, 133,770.45 and 71,684.30

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Solution

The fourth proportional to 89,374.70, 133,770.45 and 71,684.30 is: 107,292.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,374.70 : 133,770.45 = 71,684.30 : x
  2. Step 2: Convert to fraction form
    89,374.70/133,770.45 = 71,684.30/x
  3. Step 3: Cross multiply
    89,374.70x = 133,770.45 × 71,684.30
  4. Step 4: Simplify right side
    89,374.70x = 9,589,241,068.94
  5. Step 5: Solve for x
    x = 9,589,241,068.94/89,374.70
  6. Step 6: Final answer
    x = 107,292.57

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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.