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Finding the Fourth Proportional to 75,144.40, 103,696.52 and 43,314.64

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Solution

The fourth proportional to 75,144.40, 103,696.52 and 43,314.64 is: 59,772.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,144.40 : 103,696.52 = 43,314.64 : x
  2. Step 2: Convert to fraction form
    75,144.40/103,696.52 = 43,314.64/x
  3. Step 3: Cross multiply
    75,144.40x = 103,696.52 × 43,314.64
  4. Step 4: Simplify right side
    75,144.40x = 4,491,577,433.05
  5. Step 5: Solve for x
    x = 4,491,577,433.05/75,144.40
  6. Step 6: Final answer
    x = 59,772.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.