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Finding the Fourth Proportional to 64,984.70, 97,489.16 and 20,599.54

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Solution

The fourth proportional to 64,984.70, 97,489.16 and 20,599.54 is: 30,903.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,984.70 : 97,489.16 = 20,599.54 : x
  2. Step 2: Convert to fraction form
    64,984.70/97,489.16 = 20,599.54/x
  3. Step 3: Cross multiply
    64,984.70x = 97,489.16 × 20,599.54
  4. Step 4: Simplify right side
    64,984.70x = 2,008,231,850.99
  5. Step 5: Solve for x
    x = 2,008,231,850.99/64,984.70
  6. Step 6: Final answer
    x = 30,903.15

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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.