Home / 66,270.72-91,446.78-40,778.67

Finding the Fourth Proportional to 66,270.72, 91,446.78 and 40,778.67

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Solution

The fourth proportional to 66,270.72, 91,446.78 and 40,778.67 is: 56,270.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,270.72 : 91,446.78 = 40,778.67 : x
  2. Step 2: Convert to fraction form
    66,270.72/91,446.78 = 40,778.67/x
  3. Step 3: Cross multiply
    66,270.72x = 91,446.78 × 40,778.67
  4. Step 4: Simplify right side
    66,270.72x = 3,729,078,064.18
  5. Step 5: Solve for x
    x = 3,729,078,064.18/66,270.72
  6. Step 6: Final answer
    x = 56,270.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.