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Finding the Fourth Proportional to 84,374.40, 126,464.40 and 34,429.80

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Solution

The fourth proportional to 84,374.40, 126,464.40 and 34,429.80 is: 51,605.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,374.40 : 126,464.40 = 34,429.80 : x
  2. Step 2: Convert to fraction form
    84,374.40/126,464.40 = 34,429.80/x
  3. Step 3: Cross multiply
    84,374.40x = 126,464.40 × 34,429.80
  4. Step 4: Simplify right side
    84,374.40x = 4,354,143,999.12
  5. Step 5: Solve for x
    x = 4,354,143,999.12/84,374.40
  6. Step 6: Final answer
    x = 51,605.04

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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.