Home / 81,005.04-121,506.72-27,696.54

Finding the Fourth Proportional to 81,005.04, 121,506.72 and 27,696.54

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Solution

The fourth proportional to 81,005.04, 121,506.72 and 27,696.54 is: 41,544.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005.04 : 121,506.72 = 27,696.54 : x
  2. Step 2: Convert to fraction form
    81,005.04/121,506.72 = 27,696.54/x
  3. Step 3: Cross multiply
    81,005.04x = 121,506.72 × 27,696.54
  4. Step 4: Simplify right side
    81,005.04x = 3,365,315,730.75
  5. Step 5: Solve for x
    x = 3,365,315,730.75/81,005.04
  6. Step 6: Final answer
    x = 41,544.52

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1.5x scale

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.