Home / 47,787.80-71,680.05-12,249.46

Finding the Fourth Proportional to 47,787.80, 71,680.05 and 12,249.46

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Solution

The fourth proportional to 47,787.80, 71,680.05 and 12,249.46 is: 18,373.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,787.80 : 71,680.05 = 12,249.46 : x
  2. Step 2: Convert to fraction form
    47,787.80/71,680.05 = 12,249.46/x
  3. Step 3: Cross multiply
    47,787.80x = 71,680.05 × 12,249.46
  4. Step 4: Simplify right side
    47,787.80x = 878,041,905.27
  5. Step 5: Solve for x
    x = 878,041,905.27/47,787.80
  6. Step 6: Final answer
    x = 18,373.77

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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.