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Finding the Fourth Proportional to 84,820.70, 127,209.72 and 34,914.72

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Solution

The fourth proportional to 84,820.70, 127,209.72 and 34,914.72 is: 52,363.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,820.70 : 127,209.72 = 34,914.72 : x
  2. Step 2: Convert to fraction form
    84,820.70/127,209.72 = 34,914.72/x
  3. Step 3: Cross multiply
    84,820.70x = 127,209.72 × 34,914.72
  4. Step 4: Simplify right side
    84,820.70x = 4,441,491,755.08
  5. Step 5: Solve for x
    x = 4,441,491,755.08/84,820.70
  6. Step 6: Final answer
    x = 52,363.30

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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.