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Finding the Fourth Proportional to 90,021.48, 134,939.88 and 33,851.22

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Solution

The fourth proportional to 90,021.48, 134,939.88 and 33,851.22 is: 50,742.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.48 : 134,939.88 = 33,851.22 : x
  2. Step 2: Convert to fraction form
    90,021.48/134,939.88 = 33,851.22/x
  3. Step 3: Cross multiply
    90,021.48x = 134,939.88 × 33,851.22
  4. Step 4: Simplify right side
    90,021.48x = 4,567,879,564.65
  5. Step 5: Solve for x
    x = 4,567,879,564.65/90,021.48
  6. Step 6: Final answer
    x = 50,742.11

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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.