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Finding the Fourth Proportional to 66,295.19, 91,485.60 and 36,079.86

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Solution

The fourth proportional to 66,295.19, 91,485.60 and 36,079.86 is: 49,789.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,295.19 : 91,485.60 = 36,079.86 : x
  2. Step 2: Convert to fraction form
    66,295.19/91,485.60 = 36,079.86/x
  3. Step 3: Cross multiply
    66,295.19x = 91,485.60 × 36,079.86
  4. Step 4: Simplify right side
    66,295.19x = 3,300,787,640.02
  5. Step 5: Solve for x
    x = 3,300,787,640.02/66,295.19
  6. Step 6: Final answer
    x = 49,789.25

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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.