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Finding the Fourth Proportional to 65,704.20, 90,671.79 and 35,896.20

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Solution

The fourth proportional to 65,704.20, 90,671.79 and 35,896.20 is: 49,536.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,704.20 : 90,671.79 = 35,896.20 : x
  2. Step 2: Convert to fraction form
    65,704.20/90,671.79 = 35,896.20/x
  3. Step 3: Cross multiply
    65,704.20x = 90,671.79 × 35,896.20
  4. Step 4: Simplify right side
    65,704.20x = 3,254,772,708.20
  5. Step 5: Solve for x
    x = 3,254,772,708.20/65,704.20
  6. Step 6: Final answer
    x = 49,536.75

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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.