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Finding the Fourth Proportional to 51,349.44, 70,858.80 and 28,992

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Solution

The fourth proportional to 51,349.44, 70,858.80 and 28,992 is: 40,007.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,349.44 : 70,858.80 = 28,992 : x
  2. Step 2: Convert to fraction form
    51,349.44/70,858.80 = 28,992/x
  3. Step 3: Cross multiply
    51,349.44x = 70,858.80 × 28,992
  4. Step 4: Simplify right side
    51,349.44x = 2,054,338,329.60
  5. Step 5: Solve for x
    x = 2,054,338,329.60/51,349.44
  6. Step 6: Final answer
    x = 40,007.02

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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.