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Finding the Fourth Proportional to 45,168.32, 67,741.59 and 18,858.80

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Solution

The fourth proportional to 45,168.32, 67,741.59 and 18,858.80 is: 28,283.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,168.32 : 67,741.59 = 18,858.80 : x
  2. Step 2: Convert to fraction form
    45,168.32/67,741.59 = 18,858.80/x
  3. Step 3: Cross multiply
    45,168.32x = 67,741.59 × 18,858.80
  4. Step 4: Simplify right side
    45,168.32x = 1,277,525,097.49
  5. Step 5: Solve for x
    x = 1,277,525,097.49/45,168.32
  6. Step 6: Final answer
    x = 28,283.65

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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.