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Finding the Fourth Proportional to 89,873.94, 134,893.71 and 45,531.57

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Solution

The fourth proportional to 89,873.94, 134,893.71 and 45,531.57 is: 68,339.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,873.94 : 134,893.71 = 45,531.57 : x
  2. Step 2: Convert to fraction form
    89,873.94/134,893.71 = 45,531.57/x
  3. Step 3: Cross multiply
    89,873.94x = 134,893.71 × 45,531.57
  4. Step 4: Simplify right side
    89,873.94x = 6,141,922,399.42
  5. Step 5: Solve for x
    x = 6,141,922,399.42/89,873.94
  6. Step 6: Final answer
    x = 68,339.30

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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.