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Finding the Fourth Proportional to 67,236.34, 100,852.08 and 20,488

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Solution

The fourth proportional to 67,236.34, 100,852.08 and 20,488 is: 30,731.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,236.34 : 100,852.08 = 20,488 : x
  2. Step 2: Convert to fraction form
    67,236.34/100,852.08 = 20,488/x
  3. Step 3: Cross multiply
    67,236.34x = 100,852.08 × 20,488
  4. Step 4: Simplify right side
    67,236.34x = 2,066,257,415.04
  5. Step 5: Solve for x
    x = 2,066,257,415.04/67,236.34
  6. Step 6: Final answer
    x = 30,731.26

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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.