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Finding the Fourth Proportional to 43,156.80, 64,751.40 and 16,880.40

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Solution

The fourth proportional to 43,156.80, 64,751.40 and 16,880.40 is: 25,326.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,156.80 : 64,751.40 = 16,880.40 : x
  2. Step 2: Convert to fraction form
    43,156.80/64,751.40 = 16,880.40/x
  3. Step 3: Cross multiply
    43,156.80x = 64,751.40 × 16,880.40
  4. Step 4: Simplify right side
    43,156.80x = 1,093,029,532.56
  5. Step 5: Solve for x
    x = 1,093,029,532.56/43,156.80
  6. Step 6: Final answer
    x = 25,326.94

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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.