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Finding the Fourth Proportional to 71,627.94, 107,143.56 and 66,313.53

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Solution

The fourth proportional to 71,627.94, 107,143.56 and 66,313.53 is: 99,194.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,627.94 : 107,143.56 = 66,313.53 : x
  2. Step 2: Convert to fraction form
    71,627.94/107,143.56 = 66,313.53/x
  3. Step 3: Cross multiply
    71,627.94x = 107,143.56 × 66,313.53
  4. Step 4: Simplify right side
    71,627.94x = 7,105,067,680.37
  5. Step 5: Solve for x
    x = 7,105,067,680.37/71,627.94
  6. Step 6: Final answer
    x = 99,194.08

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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.