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Finding the Fourth Proportional to 70,672.82, 106,008.34 and 20,751.11

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Solution

The fourth proportional to 70,672.82, 106,008.34 and 20,751.11 is: 31,126.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,672.82 : 106,008.34 = 20,751.11 : x
  2. Step 2: Convert to fraction form
    70,672.82/106,008.34 = 20,751.11/x
  3. Step 3: Cross multiply
    70,672.82x = 106,008.34 × 20,751.11
  4. Step 4: Simplify right side
    70,672.82x = 2,199,790,724.26
  5. Step 5: Solve for x
    x = 2,199,790,724.26/70,672.82
  6. Step 6: Final answer
    x = 31,126.41

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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.