Home / 87,636.38-120,938.20-49,914.14

Finding the Fourth Proportional to 87,636.38, 120,938.20 and 49,914.14

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Solution

The fourth proportional to 87,636.38, 120,938.20 and 49,914.14 is: 68,881.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,636.38 : 120,938.20 = 49,914.14 : x
  2. Step 2: Convert to fraction form
    87,636.38/120,938.20 = 49,914.14/x
  3. Step 3: Cross multiply
    87,636.38x = 120,938.20 × 49,914.14
  4. Step 4: Simplify right side
    87,636.38x = 6,036,525,516.67
  5. Step 5: Solve for x
    x = 6,036,525,516.67/87,636.38
  6. Step 6: Final answer
    x = 68,881.51

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Double scale
Find fourth proportional to 87,637.38, 120,939.58 and 49,915.14
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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.