Home / 71,019.21-106,510.38-21,087.57

Finding the Fourth Proportional to 71,019.21, 106,510.38 and 21,087.57

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Solution

The fourth proportional to 71,019.21, 106,510.38 and 21,087.57 is: 31,625.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,019.21 : 106,510.38 = 21,087.57 : x
  2. Step 2: Convert to fraction form
    71,019.21/106,510.38 = 21,087.57/x
  3. Step 3: Cross multiply
    71,019.21x = 106,510.38 × 21,087.57
  4. Step 4: Simplify right side
    71,019.21x = 2,246,045,093.98
  5. Step 5: Solve for x
    x = 2,246,045,093.98/71,019.21
  6. Step 6: Final answer
    x = 31,625.88

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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.