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Finding the Fourth Proportional to 72,108.84, 108,163.50 and 19,518.33

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Solution

The fourth proportional to 72,108.84, 108,163.50 and 19,518.33 is: 29,277.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,108.84 : 108,163.50 = 19,518.33 : x
  2. Step 2: Convert to fraction form
    72,108.84/108,163.50 = 19,518.33/x
  3. Step 3: Cross multiply
    72,108.84x = 108,163.50 × 19,518.33
  4. Step 4: Simplify right side
    72,108.84x = 2,111,170,886.96
  5. Step 5: Solve for x
    x = 2,111,170,886.96/72,108.84
  6. Step 6: Final answer
    x = 29,277.56

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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.