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Finding the Fourth Proportional to 45,458.88, 68,224.32 and 19,181.76

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Solution

The fourth proportional to 45,458.88, 68,224.32 and 19,181.76 is: 28,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,458.88 : 68,224.32 = 19,181.76 : x
  2. Step 2: Convert to fraction form
    45,458.88/68,224.32 = 19,181.76/x
  3. Step 3: Cross multiply
    45,458.88x = 68,224.32 × 19,181.76
  4. Step 4: Simplify right side
    45,458.88x = 1,308,662,532.40
  5. Step 5: Solve for x
    x = 1,308,662,532.40/45,458.88
  6. Step 6: Final answer
    x = 28,787.83

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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.