Home / 45,141.62-67,728.63-20,179.58

Finding the Fourth Proportional to 45,141.62, 67,728.63 and 20,179.58

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Solution

The fourth proportional to 45,141.62, 67,728.63 and 20,179.58 is: 30,276.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,141.62 : 67,728.63 = 20,179.58 : x
  2. Step 2: Convert to fraction form
    45,141.62/67,728.63 = 20,179.58/x
  3. Step 3: Cross multiply
    45,141.62x = 67,728.63 × 20,179.58
  4. Step 4: Simplify right side
    45,141.62x = 1,366,735,307.38
  5. Step 5: Solve for x
    x = 1,366,735,307.38/45,141.62
  6. Step 6: Final answer
    x = 30,276.61

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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.