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Finding the Fourth Proportional to 68,515.52, 102,771.68 and 31,579.52

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Solution

The fourth proportional to 68,515.52, 102,771.68 and 31,579.52 is: 47,368.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,515.52 : 102,771.68 = 31,579.52 : x
  2. Step 2: Convert to fraction form
    68,515.52/102,771.68 = 31,579.52/x
  3. Step 3: Cross multiply
    68,515.52x = 102,771.68 × 31,579.52
  4. Step 4: Simplify right side
    68,515.52x = 3,245,480,323.99
  5. Step 5: Solve for x
    x = 3,245,480,323.99/68,515.52
  6. Step 6: Final answer
    x = 47,368.54

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1.5x scale

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.