Home / 85,942.46-128,917.17-40,940.67

Finding the Fourth Proportional to 85,942.46, 128,917.17 and 40,940.67

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Solution

The fourth proportional to 85,942.46, 128,917.17 and 40,940.67 is: 61,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,942.46 : 128,917.17 = 40,940.67 : x
  2. Step 2: Convert to fraction form
    85,942.46/128,917.17 = 40,940.67/x
  3. Step 3: Cross multiply
    85,942.46x = 128,917.17 × 40,940.67
  4. Step 4: Simplify right side
    85,942.46x = 5,277,955,314.30
  5. Step 5: Solve for x
    x = 5,277,955,314.30/85,942.46
  6. Step 6: Final answer
    x = 61,412.66

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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.