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Finding the Fourth Proportional to 67,657.16, 101,485.90 and 18,409.16

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Solution

The fourth proportional to 67,657.16, 101,485.90 and 18,409.16 is: 27,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,657.16 : 101,485.90 = 18,409.16 : x
  2. Step 2: Convert to fraction form
    67,657.16/101,485.90 = 18,409.16/x
  3. Step 3: Cross multiply
    67,657.16x = 101,485.90 × 18,409.16
  4. Step 4: Simplify right side
    67,657.16x = 1,868,270,170.84
  5. Step 5: Solve for x
    x = 1,868,270,170.84/67,657.16
  6. Step 6: Final answer
    x = 27,613.78

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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.