Home / 45,439.52-68,153.81-12,162.15

Finding the Fourth Proportional to 45,439.52, 68,153.81 and 12,162.15

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Solution

The fourth proportional to 45,439.52, 68,153.81 and 12,162.15 is: 18,241.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,439.52 : 68,153.81 = 12,162.15 : x
  2. Step 2: Convert to fraction form
    45,439.52/68,153.81 = 12,162.15/x
  3. Step 3: Cross multiply
    45,439.52x = 68,153.81 × 12,162.15
  4. Step 4: Simplify right side
    45,439.52x = 828,896,799.48
  5. Step 5: Solve for x
    x = 828,896,799.48/45,439.52
  6. Step 6: Final answer
    x = 18,241.76

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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.