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Finding the Fourth Proportional to 43,187.87, 64,787.27 and 16,889.20

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Solution

The fourth proportional to 43,187.87, 64,787.27 and 16,889.20 is: 25,335.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,187.87 : 64,787.27 = 16,889.20 : x
  2. Step 2: Convert to fraction form
    43,187.87/64,787.27 = 16,889.20/x
  3. Step 3: Cross multiply
    43,187.87x = 64,787.27 × 16,889.20
  4. Step 4: Simplify right side
    43,187.87x = 1,094,205,160.48
  5. Step 5: Solve for x
    x = 1,094,205,160.48/43,187.87
  6. Step 6: Final answer
    x = 25,335.94

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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.