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Finding the Fourth Proportional to 89,819.40, 134,729.10 and 37,211.40

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Solution

The fourth proportional to 89,819.40, 134,729.10 and 37,211.40 is: 55,817.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,819.40 : 134,729.10 = 37,211.40 : x
  2. Step 2: Convert to fraction form
    89,819.40/134,729.10 = 37,211.40/x
  3. Step 3: Cross multiply
    89,819.40x = 134,729.10 × 37,211.40
  4. Step 4: Simplify right side
    89,819.40x = 5,013,458,431.74
  5. Step 5: Solve for x
    x = 5,013,458,431.74/89,819.40
  6. Step 6: Final answer
    x = 55,817.10

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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.