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Finding the Fourth Proportional to 66,601.80, 91,723.38 and 65,150.28

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Solution

The fourth proportional to 66,601.80, 91,723.38 and 65,150.28 is: 89,724.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,601.80 : 91,723.38 = 65,150.28 : x
  2. Step 2: Convert to fraction form
    66,601.80/91,723.38 = 65,150.28/x
  3. Step 3: Cross multiply
    66,601.80x = 91,723.38 × 65,150.28
  4. Step 4: Simplify right side
    66,601.80x = 5,975,803,889.55
  5. Step 5: Solve for x
    x = 5,975,803,889.55/66,601.80
  6. Step 6: Final answer
    x = 89,724.36

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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.