Home / 64,769.15-97,157.21-20,399.38

Finding the Fourth Proportional to 64,769.15, 97,157.21 and 20,399.38

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Solution

The fourth proportional to 64,769.15, 97,157.21 and 20,399.38 is: 30,600.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,769.15 : 97,157.21 = 20,399.38 : x
  2. Step 2: Convert to fraction form
    64,769.15/97,157.21 = 20,399.38/x
  3. Step 3: Cross multiply
    64,769.15x = 97,157.21 × 20,399.38
  4. Step 4: Simplify right side
    64,769.15x = 1,981,946,501.64
  5. Step 5: Solve for x
    x = 1,981,946,501.64/64,769.15
  6. Step 6: Final answer
    x = 30,600.16

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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.