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Finding the Fourth Proportional to 71,607.84, 107,403.50 and 19,021.56

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Solution

The fourth proportional to 71,607.84, 107,403.50 and 19,021.56 is: 28,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,607.84 : 107,403.50 = 19,021.56 : x
  2. Step 2: Convert to fraction form
    71,607.84/107,403.50 = 19,021.56/x
  3. Step 3: Cross multiply
    71,607.84x = 107,403.50 × 19,021.56
  4. Step 4: Simplify right side
    71,607.84x = 2,042,982,119.46
  5. Step 5: Solve for x
    x = 2,042,982,119.46/71,607.84
  6. Step 6: Final answer
    x = 28,530.15

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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.