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Finding the Fourth Proportional to 79,682.40, 119,523.60 and 69,314.40

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Solution

The fourth proportional to 79,682.40, 119,523.60 and 69,314.40 is: 103,971.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,682.40 : 119,523.60 = 69,314.40 : x
  2. Step 2: Convert to fraction form
    79,682.40/119,523.60 = 69,314.40/x
  3. Step 3: Cross multiply
    79,682.40x = 119,523.60 × 69,314.40
  4. Step 4: Simplify right side
    79,682.40x = 8,284,706,619.84
  5. Step 5: Solve for x
    x = 8,284,706,619.84/79,682.40
  6. Step 6: Final answer
    x = 103,971.60

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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.