Home / 64,659.38-96,989.09-20,289.60

Finding the Fourth Proportional to 64,659.38, 96,989.09 and 20,289.60

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Solution

The fourth proportional to 64,659.38, 96,989.09 and 20,289.60 is: 30,434.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.38 : 96,989.09 = 20,289.60 : x
  2. Step 2: Convert to fraction form
    64,659.38/96,989.09 = 20,289.60/x
  3. Step 3: Cross multiply
    64,659.38x = 96,989.09 × 20,289.60
  4. Step 4: Simplify right side
    64,659.38x = 1,967,869,739.02
  5. Step 5: Solve for x
    x = 1,967,869,739.02/64,659.38
  6. Step 6: Final answer
    x = 30,434.41

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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.