Home / 82,478.21-123,661.82-38,080.49

Finding the Fourth Proportional to 82,478.21, 123,661.82 and 38,080.49

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Solution

The fourth proportional to 82,478.21, 123,661.82 and 38,080.49 is: 57,095.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,478.21 : 123,661.82 = 38,080.49 : x
  2. Step 2: Convert to fraction form
    82,478.21/123,661.82 = 38,080.49/x
  3. Step 3: Cross multiply
    82,478.21x = 123,661.82 × 38,080.49
  4. Step 4: Simplify right side
    82,478.21x = 4,709,102,176.78
  5. Step 5: Solve for x
    x = 4,709,102,176.78/82,478.21
  6. Step 6: Final answer
    x = 57,095.11

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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.