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Finding the Fourth Proportional to 85,960.98, 128,969.49 and 43,244.37

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Solution

The fourth proportional to 85,960.98, 128,969.49 and 43,244.37 is: 64,880.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,960.98 : 128,969.49 = 43,244.37 : x
  2. Step 2: Convert to fraction form
    85,960.98/128,969.49 = 43,244.37/x
  3. Step 3: Cross multiply
    85,960.98x = 128,969.49 × 43,244.37
  4. Step 4: Simplify right side
    85,960.98x = 5,577,204,506.44
  5. Step 5: Solve for x
    x = 5,577,204,506.44/85,960.98
  6. Step 6: Final answer
    x = 64,880.65

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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.