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Finding the Fourth Proportional to 65,512.88, 90,410.28 and 35,704.88

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Solution

The fourth proportional to 65,512.88, 90,410.28 and 35,704.88 is: 49,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,512.88 : 90,410.28 = 35,704.88 : x
  2. Step 2: Convert to fraction form
    65,512.88/90,410.28 = 35,704.88/x
  3. Step 3: Cross multiply
    65,512.88x = 90,410.28 × 35,704.88
  4. Step 4: Simplify right side
    65,512.88x = 3,228,088,198.17
  5. Step 5: Solve for x
    x = 3,228,088,198.17/65,512.88
  6. Step 6: Final answer
    x = 49,274.10

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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.