Home / 49,109.21-67,771.19-27,888.63

Finding the Fourth Proportional to 49,109.21, 67,771.19 and 27,888.63

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Solution

The fourth proportional to 49,109.21, 67,771.19 and 27,888.63 is: 38,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,109.21 : 67,771.19 = 27,888.63 : x
  2. Step 2: Convert to fraction form
    49,109.21/67,771.19 = 27,888.63/x
  3. Step 3: Cross multiply
    49,109.21x = 67,771.19 × 27,888.63
  4. Step 4: Simplify right side
    49,109.21x = 1,890,045,760.93
  5. Step 5: Solve for x
    x = 1,890,045,760.93/49,109.21
  6. Step 6: Final answer
    x = 38,486.58

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Double scale
Find fourth proportional to 49,110.21, 67,772.57 and 27,889.63
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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.