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Finding the Fourth Proportional to 70,451.44, 105,675.69 and 17,143.70

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Solution

The fourth proportional to 70,451.44, 105,675.69 and 17,143.70 is: 25,715.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,451.44 : 105,675.69 = 17,143.70 : x
  2. Step 2: Convert to fraction form
    70,451.44/105,675.69 = 17,143.70/x
  3. Step 3: Cross multiply
    70,451.44x = 105,675.69 × 17,143.70
  4. Step 4: Simplify right side
    70,451.44x = 1,811,672,326.65
  5. Step 5: Solve for x
    x = 1,811,672,326.65/70,451.44
  6. Step 6: Final answer
    x = 25,715.19

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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.