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Finding the Fourth Proportional to 65,880.45, 98,919.09 and 64,896.30

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Solution

The fourth proportional to 65,880.45, 98,919.09 and 64,896.30 is: 97,441.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.45 : 98,919.09 = 64,896.30 : x
  2. Step 2: Convert to fraction form
    65,880.45/98,919.09 = 64,896.30/x
  3. Step 3: Cross multiply
    65,880.45x = 98,919.09 × 64,896.30
  4. Step 4: Simplify right side
    65,880.45x = 6,419,482,940.37
  5. Step 5: Solve for x
    x = 6,419,482,940.37/65,880.45
  6. Step 6: Final answer
    x = 97,441.39

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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.