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Finding the Fourth Proportional to 65,660, 90,611.04 and 35,852

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Solution

The fourth proportional to 65,660, 90,611.04 and 35,852 is: 49,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,660 : 90,611.04 = 35,852 : x
  2. Step 2: Convert to fraction form
    65,660/90,611.04 = 35,852/x
  3. Step 3: Cross multiply
    65,660x = 90,611.04 × 35,852
  4. Step 4: Simplify right side
    65,660x = 3,248,587,006.08
  5. Step 5: Solve for x
    x = 3,248,587,006.08/65,660
  6. Step 6: Final answer
    x = 49,475.89

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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.