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Finding the Fourth Proportional to 82,770.50, 123,860.36 and 71,715.08

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Solution

The fourth proportional to 82,770.50, 123,860.36 and 71,715.08 is: 107,316.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,770.50 : 123,860.36 = 71,715.08 : x
  2. Step 2: Convert to fraction form
    82,770.50/123,860.36 = 71,715.08/x
  3. Step 3: Cross multiply
    82,770.50x = 123,860.36 × 71,715.08
  4. Step 4: Simplify right side
    82,770.50x = 8,882,655,626.23
  5. Step 5: Solve for x
    x = 8,882,655,626.23/82,770.50
  6. Step 6: Final answer
    x = 107,316.68

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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.