Home / 71,072.30-106,608.45-21,153.12

Finding the Fourth Proportional to 71,072.30, 106,608.45 and 21,153.12

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Solution

The fourth proportional to 71,072.30, 106,608.45 and 21,153.12 is: 31,729.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.30 : 106,608.45 = 21,153.12 : x
  2. Step 2: Convert to fraction form
    71,072.30/106,608.45 = 21,153.12/x
  3. Step 3: Cross multiply
    71,072.30x = 106,608.45 × 21,153.12
  4. Step 4: Simplify right side
    71,072.30x = 2,255,101,015.41
  5. Step 5: Solve for x
    x = 2,255,101,015.41/71,072.30
  6. Step 6: Final answer
    x = 31,729.67

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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.