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Finding the Fourth Proportional to 80,049.19, 110,465 and 48,211.87

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Solution

The fourth proportional to 80,049.19, 110,465 and 48,211.87 is: 66,530.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,049.19 : 110,465 = 48,211.87 : x
  2. Step 2: Convert to fraction form
    80,049.19/110,465 = 48,211.87/x
  3. Step 3: Cross multiply
    80,049.19x = 110,465 × 48,211.87
  4. Step 4: Simplify right side
    80,049.19x = 5,325,724,219.55
  5. Step 5: Solve for x
    x = 5,325,724,219.55/80,049.19
  6. Step 6: Final answer
    x = 66,530.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.