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Finding the Fourth Proportional to 73,619.19, 110,436.45 and 20,311.17

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Solution

The fourth proportional to 73,619.19, 110,436.45 and 20,311.17 is: 30,468.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,619.19 : 110,436.45 = 20,311.17 : x
  2. Step 2: Convert to fraction form
    73,619.19/110,436.45 = 20,311.17/x
  3. Step 3: Cross multiply
    73,619.19x = 110,436.45 × 20,311.17
  4. Step 4: Simplify right side
    73,619.19x = 2,243,093,510.15
  5. Step 5: Solve for x
    x = 2,243,093,510.15/73,619.19
  6. Step 6: Final answer
    x = 30,468.87

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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.