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Finding the Fourth Proportional to 66,258.63, 91,439.34 and 37,969.80

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Solution

The fourth proportional to 66,258.63, 91,439.34 and 37,969.80 is: 52,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,258.63 : 91,439.34 = 37,969.80 : x
  2. Step 2: Convert to fraction form
    66,258.63/91,439.34 = 37,969.80/x
  3. Step 3: Cross multiply
    66,258.63x = 91,439.34 × 37,969.80
  4. Step 4: Simplify right side
    66,258.63x = 3,471,933,451.93
  5. Step 5: Solve for x
    x = 3,471,933,451.93/66,258.63
  6. Step 6: Final answer
    x = 52,399.72

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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.