Home / 78,287.53-117,435.24-22,131.67

Finding the Fourth Proportional to 78,287.53, 117,435.24 and 22,131.67

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Solution

The fourth proportional to 78,287.53, 117,435.24 and 22,131.67 is: 33,198.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287.53 : 117,435.24 = 22,131.67 : x
  2. Step 2: Convert to fraction form
    78,287.53/117,435.24 = 22,131.67/x
  3. Step 3: Cross multiply
    78,287.53x = 117,435.24 × 22,131.67
  4. Step 4: Simplify right side
    78,287.53x = 2,599,037,684.46
  5. Step 5: Solve for x
    x = 2,599,037,684.46/78,287.53
  6. Step 6: Final answer
    x = 33,198.62

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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.