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Finding the Fourth Proportional to 66,612.66, 91,928.97 and 38,322.60

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Solution

The fourth proportional to 66,612.66, 91,928.97 and 38,322.60 is: 52,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,612.66 : 91,928.97 = 38,322.60 : x
  2. Step 2: Convert to fraction form
    66,612.66/91,928.97 = 38,322.60/x
  3. Step 3: Cross multiply
    66,612.66x = 91,928.97 × 38,322.60
  4. Step 4: Simplify right side
    66,612.66x = 3,522,957,145.72
  5. Step 5: Solve for x
    x = 3,522,957,145.72/66,612.66
  6. Step 6: Final answer
    x = 52,887.20

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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.