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Finding the Fourth Proportional to 71,277.84, 106,923.24 and 18,687.12

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Solution

The fourth proportional to 71,277.84, 106,923.24 and 18,687.12 is: 28,032.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,277.84 : 106,923.24 = 18,687.12 : x
  2. Step 2: Convert to fraction form
    71,277.84/106,923.24 = 18,687.12/x
  3. Step 3: Cross multiply
    71,277.84x = 106,923.24 × 18,687.12
  4. Step 4: Simplify right side
    71,277.84x = 1,998,087,416.67
  5. Step 5: Solve for x
    x = 1,998,087,416.67/71,277.84
  6. Step 6: Final answer
    x = 28,032.38

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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.