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Finding the Fourth Proportional to 64,990.75, 97,471.14 and 20,609.23

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Solution

The fourth proportional to 64,990.75, 97,471.14 and 20,609.23 is: 30,909.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,990.75 : 97,471.14 = 20,609.23 : x
  2. Step 2: Convert to fraction form
    64,990.75/97,471.14 = 20,609.23/x
  3. Step 3: Cross multiply
    64,990.75x = 97,471.14 × 20,609.23
  4. Step 4: Simplify right side
    64,990.75x = 2,008,805,142.62
  5. Step 5: Solve for x
    x = 2,008,805,142.62/64,990.75
  6. Step 6: Final answer
    x = 30,909.09

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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.