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Finding the Fourth Proportional to 89,896.95, 134,928.25 and 45,554.72

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Solution

The fourth proportional to 89,896.95, 134,928.25 and 45,554.72 is: 68,374.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,896.95 : 134,928.25 = 45,554.72 : x
  2. Step 2: Convert to fraction form
    89,896.95/134,928.25 = 45,554.72/x
  3. Step 3: Cross multiply
    89,896.95x = 134,928.25 × 45,554.72
  4. Step 4: Simplify right side
    89,896.95x = 6,146,617,860.31
  5. Step 5: Solve for x
    x = 6,146,617,860.31/89,896.95
  6. Step 6: Final answer
    x = 68,374.04

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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.