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Finding the Fourth Proportional to 70,500.75, 105,754.01 and 17,911.59

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Solution

The fourth proportional to 70,500.75, 105,754.01 and 17,911.59 is: 26,868.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,500.75 : 105,754.01 = 17,911.59 : x
  2. Step 2: Convert to fraction form
    70,500.75/105,754.01 = 17,911.59/x
  3. Step 3: Cross multiply
    70,500.75x = 105,754.01 × 17,911.59
  4. Step 4: Simplify right side
    70,500.75x = 1,894,222,378.42
  5. Step 5: Solve for x
    x = 1,894,222,378.42/70,500.75
  6. Step 6: Final answer
    x = 26,868.12

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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.