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Finding the Fourth Proportional to 66,889.64, 92,308.40 and 38,213.10

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Solution

The fourth proportional to 66,889.64, 92,308.40 and 38,213.10 is: 52,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,889.64 : 92,308.40 = 38,213.10 : x
  2. Step 2: Convert to fraction form
    66,889.64/92,308.40 = 38,213.10/x
  3. Step 3: Cross multiply
    66,889.64x = 92,308.40 × 38,213.10
  4. Step 4: Simplify right side
    66,889.64x = 3,527,389,928.97
  5. Step 5: Solve for x
    x = 3,527,389,928.97/66,889.64
  6. Step 6: Final answer
    x = 52,734.48

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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.