Home / 51,639.97-71,258.79-28,975.90

Finding the Fourth Proportional to 51,639.97, 71,258.79 and 28,975.90

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Solution

The fourth proportional to 51,639.97, 71,258.79 and 28,975.90 is: 39,984.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,639.97 : 71,258.79 = 28,975.90 : x
  2. Step 2: Convert to fraction form
    51,639.97/71,258.79 = 28,975.90/x
  3. Step 3: Cross multiply
    51,639.97x = 71,258.79 × 28,975.90
  4. Step 4: Simplify right side
    51,639.97x = 2,064,787,573.16
  5. Step 5: Solve for x
    x = 2,064,787,573.16/51,639.97
  6. Step 6: Final answer
    x = 39,984.29

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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.