Home / 67,221.36-100,802.88-20,463.36

Finding the Fourth Proportional to 67,221.36, 100,802.88 and 20,463.36

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Solution

The fourth proportional to 67,221.36, 100,802.88 and 20,463.36 is: 30,686.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.36 : 100,802.88 = 20,463.36 : x
  2. Step 2: Convert to fraction form
    67,221.36/100,802.88 = 20,463.36/x
  3. Step 3: Cross multiply
    67,221.36x = 100,802.88 × 20,463.36
  4. Step 4: Simplify right side
    67,221.36x = 2,062,765,622.48
  5. Step 5: Solve for x
    x = 2,062,765,622.48/67,221.36
  6. Step 6: Final answer
    x = 30,686.16

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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.