Home / 85,846.91-128,778.66-26,666.69

Finding the Fourth Proportional to 85,846.91, 128,778.66 and 26,666.69

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Solution

The fourth proportional to 85,846.91, 128,778.66 and 26,666.69 is: 40,002.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,846.91 : 128,778.66 = 26,666.69 : x
  2. Step 2: Convert to fraction form
    85,846.91/128,778.66 = 26,666.69/x
  3. Step 3: Cross multiply
    85,846.91x = 128,778.66 × 26,666.69
  4. Step 4: Simplify right side
    85,846.91x = 3,434,099,960.94
  5. Step 5: Solve for x
    x = 3,434,099,960.94/85,846.91
  6. Step 6: Final answer
    x = 40,002.61

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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.