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Finding the Fourth Proportional to 72,069.75, 108,118.46 and 22,140.95

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Solution

The fourth proportional to 72,069.75, 108,118.46 and 22,140.95 is: 33,215.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,069.75 : 108,118.46 = 22,140.95 : x
  2. Step 2: Convert to fraction form
    72,069.75/108,118.46 = 22,140.95/x
  3. Step 3: Cross multiply
    72,069.75x = 108,118.46 × 22,140.95
  4. Step 4: Simplify right side
    72,069.75x = 2,393,844,931.70
  5. Step 5: Solve for x
    x = 2,393,844,931.70/72,069.75
  6. Step 6: Final answer
    x = 33,215.67

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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.