Home / 30,043.50-45,067.81-7,856.85

Finding the Fourth Proportional to 30,043.50, 45,067.81 and 7,856.85

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Solution

The fourth proportional to 30,043.50, 45,067.81 and 7,856.85 is: 11,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,043.50 : 45,067.81 = 7,856.85 : x
  2. Step 2: Convert to fraction form
    30,043.50/45,067.81 = 7,856.85/x
  3. Step 3: Cross multiply
    30,043.50x = 45,067.81 × 7,856.85
  4. Step 4: Simplify right side
    30,043.50x = 354,091,023.00
  5. Step 5: Solve for x
    x = 354,091,023.00/30,043.50
  6. Step 6: Final answer
    x = 11,785.94

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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.