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Finding the Fourth Proportional to 84,245.34, 126,368.42 and 34,325.90

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Solution

The fourth proportional to 84,245.34, 126,368.42 and 34,325.90 is: 51,489.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,245.34 : 126,368.42 = 34,325.90 : x
  2. Step 2: Convert to fraction form
    84,245.34/126,368.42 = 34,325.90/x
  3. Step 3: Cross multiply
    84,245.34x = 126,368.42 × 34,325.90
  4. Step 4: Simplify right side
    84,245.34x = 4,337,709,748.08
  5. Step 5: Solve for x
    x = 4,337,709,748.08/84,245.34
  6. Step 6: Final answer
    x = 51,489.02

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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.