Home / 81,144.57-121,535.36-46,908.41

Finding the Fourth Proportional to 81,144.57, 121,535.36 and 46,908.41

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Solution

The fourth proportional to 81,144.57, 121,535.36 and 46,908.41 is: 70,257.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,144.57 : 121,535.36 = 46,908.41 : x
  2. Step 2: Convert to fraction form
    81,144.57/121,535.36 = 46,908.41/x
  3. Step 3: Cross multiply
    81,144.57x = 121,535.36 × 46,908.41
  4. Step 4: Simplify right side
    81,144.57x = 5,701,029,654.16
  5. Step 5: Solve for x
    x = 5,701,029,654.16/81,144.57
  6. Step 6: Final answer
    x = 70,257.69

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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.