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Finding the Fourth Proportional to 66,668.52, 91,960.14 and 50,718.12

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Solution

The fourth proportional to 66,668.52, 91,960.14 and 50,718.12 is: 69,958.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,668.52 : 91,960.14 = 50,718.12 : x
  2. Step 2: Convert to fraction form
    66,668.52/91,960.14 = 50,718.12/x
  3. Step 3: Cross multiply
    66,668.52x = 91,960.14 × 50,718.12
  4. Step 4: Simplify right side
    66,668.52x = 4,664,045,415.74
  5. Step 5: Solve for x
    x = 4,664,045,415.74/66,668.52
  6. Step 6: Final answer
    x = 69,958.74

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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.