Home / 81,089.18-111,883.11-49,256.18

Finding the Fourth Proportional to 81,089.18, 111,883.11 and 49,256.18

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Solution

The fourth proportional to 81,089.18, 111,883.11 and 49,256.18 is: 67,961.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,089.18 : 111,883.11 = 49,256.18 : x
  2. Step 2: Convert to fraction form
    81,089.18/111,883.11 = 49,256.18/x
  3. Step 3: Cross multiply
    81,089.18x = 111,883.11 × 49,256.18
  4. Step 4: Simplify right side
    81,089.18x = 5,510,934,605.12
  5. Step 5: Solve for x
    x = 5,510,934,605.12/81,089.18
  6. Step 6: Final answer
    x = 67,961.41

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Double scale
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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.