Home / 81,572.46-112,618.26-51,383.66

Finding the Fourth Proportional to 81,572.46, 112,618.26 and 51,383.66

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Solution

The fourth proportional to 81,572.46, 112,618.26 and 51,383.66 is: 70,939.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,572.46 : 112,618.26 = 51,383.66 : x
  2. Step 2: Convert to fraction form
    81,572.46/112,618.26 = 51,383.66/x
  3. Step 3: Cross multiply
    81,572.46x = 112,618.26 × 51,383.66
  4. Step 4: Simplify right side
    81,572.46x = 5,786,738,381.63
  5. Step 5: Solve for x
    x = 5,786,738,381.63/81,572.46
  6. Step 6: Final answer
    x = 70,939.85

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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.