Home / 81,897.56-113,034.10-51,284.86

Finding the Fourth Proportional to 81,897.56, 113,034.10 and 51,284.86

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Solution

The fourth proportional to 81,897.56, 113,034.10 and 51,284.86 is: 70,782.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,897.56 : 113,034.10 = 51,284.86 : x
  2. Step 2: Convert to fraction form
    81,897.56/113,034.10 = 51,284.86/x
  3. Step 3: Cross multiply
    81,897.56x = 113,034.10 × 51,284.86
  4. Step 4: Simplify right side
    81,897.56x = 5,796,937,993.73
  5. Step 5: Solve for x
    x = 5,796,937,993.73/81,897.56
  6. Step 6: Final answer
    x = 70,782.79

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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.