Home / 51,891.71-77,785.55-20,258.28

Finding the Fourth Proportional to 51,891.71, 77,785.55 and 20,258.28

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Solution

The fourth proportional to 51,891.71, 77,785.55 and 20,258.28 is: 30,367.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,891.71 : 77,785.55 = 20,258.28 : x
  2. Step 2: Convert to fraction form
    51,891.71/77,785.55 = 20,258.28/x
  3. Step 3: Cross multiply
    51,891.71x = 77,785.55 × 20,258.28
  4. Step 4: Simplify right side
    51,891.71x = 1,575,801,451.85
  5. Step 5: Solve for x
    x = 1,575,801,451.85/51,891.71
  6. Step 6: Final answer
    x = 30,367.11

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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.