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Finding the Fourth Proportional to 72,221.52, 108,334.53 and 19,632.12

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Solution

The fourth proportional to 72,221.52, 108,334.53 and 19,632.12 is: 29,448.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,221.52 : 108,334.53 = 19,632.12 : x
  2. Step 2: Convert to fraction form
    72,221.52/108,334.53 = 19,632.12/x
  3. Step 3: Cross multiply
    72,221.52x = 108,334.53 × 19,632.12
  4. Step 4: Simplify right side
    72,221.52x = 2,126,836,493.10
  5. Step 5: Solve for x
    x = 2,126,836,493.10/72,221.52
  6. Step 6: Final answer
    x = 29,448.79

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1.5x scale

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.