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Finding the Fourth Proportional to 67,370, 101,059.06 and 20,623.28

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Solution

The fourth proportional to 67,370, 101,059.06 and 20,623.28 is: 30,936.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,370 : 101,059.06 = 20,623.28 : x
  2. Step 2: Convert to fraction form
    67,370/101,059.06 = 20,623.28/x
  3. Step 3: Cross multiply
    67,370x = 101,059.06 × 20,623.28
  4. Step 4: Simplify right side
    67,370x = 2,084,169,290.92
  5. Step 5: Solve for x
    x = 2,084,169,290.92/67,370
  6. Step 6: Final answer
    x = 30,936.16

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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.