Home / 51,431.54-70,972.16-28,766.60

Finding the Fourth Proportional to 51,431.54, 70,972.16 and 28,766.60

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Solution

The fourth proportional to 51,431.54, 70,972.16 and 28,766.60 is: 39,696.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,431.54 : 70,972.16 = 28,766.60 : x
  2. Step 2: Convert to fraction form
    51,431.54/70,972.16 = 28,766.60/x
  3. Step 3: Cross multiply
    51,431.54x = 70,972.16 × 28,766.60
  4. Step 4: Simplify right side
    51,431.54x = 2,041,627,454.91
  5. Step 5: Solve for x
    x = 2,041,627,454.91/51,431.54
  6. Step 6: Final answer
    x = 39,696.02

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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.