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Finding the Fourth Proportional to 67,608, 101,412.40 and 18,360

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Solution

The fourth proportional to 67,608, 101,412.40 and 18,360 is: 27,540.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,608 : 101,412.40 = 18,360 : x
  2. Step 2: Convert to fraction form
    67,608/101,412.40 = 18,360/x
  3. Step 3: Cross multiply
    67,608x = 101,412.40 × 18,360
  4. Step 4: Simplify right side
    67,608x = 1,861,931,664
  5. Step 5: Solve for x
    x = 1,861,931,664/67,608
  6. Step 6: Final answer
    x = 27,540.11

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.