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Finding the Fourth Proportional to 51,120.44, 70,540.08 and 28,454

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Solution

The fourth proportional to 51,120.44, 70,540.08 and 28,454 is: 39,263.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,120.44 : 70,540.08 = 28,454 : x
  2. Step 2: Convert to fraction form
    51,120.44/70,540.08 = 28,454/x
  3. Step 3: Cross multiply
    51,120.44x = 70,540.08 × 28,454
  4. Step 4: Simplify right side
    51,120.44x = 2,007,147,436.32
  5. Step 5: Solve for x
    x = 2,007,147,436.32/51,120.44
  6. Step 6: Final answer
    x = 39,263.11

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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.