Home / 81,029.73-121,544.60-21,865.40

Finding the Fourth Proportional to 81,029.73, 121,544.60 and 21,865.40

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Solution

The fourth proportional to 81,029.73, 121,544.60 and 21,865.40 is: 32,798.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,029.73 : 121,544.60 = 21,865.40 : x
  2. Step 2: Convert to fraction form
    81,029.73/121,544.60 = 21,865.40/x
  3. Step 3: Cross multiply
    81,029.73x = 121,544.60 × 21,865.40
  4. Step 4: Simplify right side
    81,029.73x = 2,657,620,579.79
  5. Step 5: Solve for x
    x = 2,657,620,579.79/81,029.73
  6. Step 6: Final answer
    x = 32,798.09

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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.