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Finding the Fourth Proportional to 82,113.40, 122,975.70 and 50,620.60

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Solution

The fourth proportional to 82,113.40, 122,975.70 and 50,620.60 is: 75,811.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,113.40 : 122,975.70 = 50,620.60 : x
  2. Step 2: Convert to fraction form
    82,113.40/122,975.70 = 50,620.60/x
  3. Step 3: Cross multiply
    82,113.40x = 122,975.70 × 50,620.60
  4. Step 4: Simplify right side
    82,113.40x = 6,225,103,719.42
  5. Step 5: Solve for x
    x = 6,225,103,719.42/82,113.40
  6. Step 6: Final answer
    x = 75,811.06

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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.