Home / 45,428.79-68,138.39-12,152.21

Finding the Fourth Proportional to 45,428.79, 68,138.39 and 12,152.21

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Solution

The fourth proportional to 45,428.79, 68,138.39 and 12,152.21 is: 18,227.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,428.79 : 68,138.39 = 12,152.21 : x
  2. Step 2: Convert to fraction form
    45,428.79/68,138.39 = 12,152.21/x
  3. Step 3: Cross multiply
    45,428.79x = 68,138.39 × 12,152.21
  4. Step 4: Simplify right side
    45,428.79x = 828,031,963.58
  5. Step 5: Solve for x
    x = 828,031,963.58/45,428.79
  6. Step 6: Final answer
    x = 18,227.03

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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.