Home / 81,308.31-112,201.77-45,011.09

Finding the Fourth Proportional to 81,308.31, 112,201.77 and 45,011.09

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Solution

The fourth proportional to 81,308.31, 112,201.77 and 45,011.09 is: 62,113.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,308.31 : 112,201.77 = 45,011.09 : x
  2. Step 2: Convert to fraction form
    81,308.31/112,201.77 = 45,011.09/x
  3. Step 3: Cross multiply
    81,308.31x = 112,201.77 × 45,011.09
  4. Step 4: Simplify right side
    81,308.31x = 5,050,324,416.93
  5. Step 5: Solve for x
    x = 5,050,324,416.93/81,308.31
  6. Step 6: Final answer
    x = 62,113.27

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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.