Home / 81,028.90-121,537.59-21,867.94

Finding the Fourth Proportional to 81,028.90, 121,537.59 and 21,867.94

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Solution

The fourth proportional to 81,028.90, 121,537.59 and 21,867.94 is: 32,800.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,028.90 : 121,537.59 = 21,867.94 : x
  2. Step 2: Convert to fraction form
    81,028.90/121,537.59 = 21,867.94/x
  3. Step 3: Cross multiply
    81,028.90x = 121,537.59 × 21,867.94
  4. Step 4: Simplify right side
    81,028.90x = 2,657,776,725.86
  5. Step 5: Solve for x
    x = 2,657,776,725.86/81,028.90
  6. Step 6: Final answer
    x = 32,800.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.