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Finding the Fourth Proportional to 36,148, 49,881.36 and 20,231.68

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Solution

The fourth proportional to 36,148, 49,881.36 and 20,231.68 is: 27,918.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,148 : 49,881.36 = 20,231.68 : x
  2. Step 2: Convert to fraction form
    36,148/49,881.36 = 20,231.68/x
  3. Step 3: Cross multiply
    36,148x = 49,881.36 × 20,231.68
  4. Step 4: Simplify right side
    36,148x = 1,009,183,713.48
  5. Step 5: Solve for x
    x = 1,009,183,713.48/36,148
  6. Step 6: Final answer
    x = 27,918.11

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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.