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Finding the Fourth Proportional to 64,989.75, 97,469.64 and 20,608.23

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Solution

The fourth proportional to 64,989.75, 97,469.64 and 20,608.23 is: 30,907.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.75 : 97,469.64 = 20,608.23 : x
  2. Step 2: Convert to fraction form
    64,989.75/97,469.64 = 20,608.23/x
  3. Step 3: Cross multiply
    64,989.75x = 97,469.64 × 20,608.23
  4. Step 4: Simplify right side
    64,989.75x = 2,008,676,759.14
  5. Step 5: Solve for x
    x = 2,008,676,759.14/64,989.75
  6. Step 6: Final answer
    x = 30,907.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.