Home / 71,131.95-106,704-18,541.35

Finding the Fourth Proportional to 71,131.95, 106,704 and 18,541.35

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Solution

The fourth proportional to 71,131.95, 106,704 and 18,541.35 is: 27,813.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,131.95 : 106,704 = 18,541.35 : x
  2. Step 2: Convert to fraction form
    71,131.95/106,704 = 18,541.35/x
  3. Step 3: Cross multiply
    71,131.95x = 106,704 × 18,541.35
  4. Step 4: Simplify right side
    71,131.95x = 1,978,436,210.40
  5. Step 5: Solve for x
    x = 1,978,436,210.40/71,131.95
  6. Step 6: Final answer
    x = 27,813.61

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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.