Home / 72,023.49-108,271.86-66,821.36

Finding the Fourth Proportional to 72,023.49, 108,271.86 and 66,821.36

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Solution

The fourth proportional to 72,023.49, 108,271.86 and 66,821.36 is: 100,451.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,023.49 : 108,271.86 = 66,821.36 : x
  2. Step 2: Convert to fraction form
    72,023.49/108,271.86 = 66,821.36/x
  3. Step 3: Cross multiply
    72,023.49x = 108,271.86 × 66,821.36
  4. Step 4: Simplify right side
    72,023.49x = 7,234,872,142.99
  5. Step 5: Solve for x
    x = 7,234,872,142.99/72,023.49
  6. Step 6: Final answer
    x = 100,451.56

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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.