Home / 82,484.21-123,808.32-38,120.91

Finding the Fourth Proportional to 82,484.21, 123,808.32 and 38,120.91

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Solution

The fourth proportional to 82,484.21, 123,808.32 and 38,120.91 is: 57,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,484.21 : 123,808.32 = 38,120.91 : x
  2. Step 2: Convert to fraction form
    82,484.21/123,808.32 = 38,120.91/x
  3. Step 3: Cross multiply
    82,484.21x = 123,808.32 × 38,120.91
  4. Step 4: Simplify right side
    82,484.21x = 4,719,685,823.97
  5. Step 5: Solve for x
    x = 4,719,685,823.97/82,484.21
  6. Step 6: Final answer
    x = 57,219.27

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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.