Home / 71,120.37-98,145.53-39,288.60

Finding the Fourth Proportional to 71,120.37, 98,145.53 and 39,288.60

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Solution

The fourth proportional to 71,120.37, 98,145.53 and 39,288.60 is: 54,217.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120.37 : 98,145.53 = 39,288.60 : x
  2. Step 2: Convert to fraction form
    71,120.37/98,145.53 = 39,288.60/x
  3. Step 3: Cross multiply
    71,120.37x = 98,145.53 × 39,288.60
  4. Step 4: Simplify right side
    71,120.37x = 3,856,000,273.52
  5. Step 5: Solve for x
    x = 3,856,000,273.52/71,120.37
  6. Step 6: Final answer
    x = 54,217.94

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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.