Home / 64,659.18-96,988.78-20,289.48

Finding the Fourth Proportional to 64,659.18, 96,988.78 and 20,289.48

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Solution

The fourth proportional to 64,659.18, 96,988.78 and 20,289.48 is: 30,434.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,659.18 : 96,988.78 = 20,289.48 : x
  2. Step 2: Convert to fraction form
    64,659.18/96,988.78 = 20,289.48/x
  3. Step 3: Cross multiply
    64,659.18x = 96,988.78 × 20,289.48
  4. Step 4: Simplify right side
    64,659.18x = 1,967,851,912.03
  5. Step 5: Solve for x
    x = 1,967,851,912.03/64,659.18
  6. Step 6: Final answer
    x = 30,434.22

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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.