Home / 64,764.24-97,162.56-20,389.20

Finding the Fourth Proportional to 64,764.24, 97,162.56 and 20,389.20

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Solution

The fourth proportional to 64,764.24, 97,162.56 and 20,389.20 is: 30,588.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,764.24 : 97,162.56 = 20,389.20 : x
  2. Step 2: Convert to fraction form
    64,764.24/97,162.56 = 20,389.20/x
  3. Step 3: Cross multiply
    64,764.24x = 97,162.56 × 20,389.20
  4. Step 4: Simplify right side
    64,764.24x = 1,981,066,868.35
  5. Step 5: Solve for x
    x = 1,981,066,868.35/64,764.24
  6. Step 6: Final answer
    x = 30,588.90

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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.