Home / 85,977.45-118,453.71-66,529.49

Finding the Fourth Proportional to 85,977.45, 118,453.71 and 66,529.49

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Solution

The fourth proportional to 85,977.45, 118,453.71 and 66,529.49 is: 91,659.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,977.45 : 118,453.71 = 66,529.49 : x
  2. Step 2: Convert to fraction form
    85,977.45/118,453.71 = 66,529.49/x
  3. Step 3: Cross multiply
    85,977.45x = 118,453.71 × 66,529.49
  4. Step 4: Simplify right side
    85,977.45x = 7,880,664,914.91
  5. Step 5: Solve for x
    x = 7,880,664,914.91/85,977.45
  6. Step 6: Final answer
    x = 91,659.67

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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.