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Finding the Fourth Proportional to 45,167.60, 67,758.60 and 18,858.80

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Solution

The fourth proportional to 45,167.60, 67,758.60 and 18,858.80 is: 28,291.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,167.60 : 67,758.60 = 18,858.80 : x
  2. Step 2: Convert to fraction form
    45,167.60/67,758.60 = 18,858.80/x
  3. Step 3: Cross multiply
    45,167.60x = 67,758.60 × 18,858.80
  4. Step 4: Simplify right side
    45,167.60x = 1,277,845,885.68
  5. Step 5: Solve for x
    x = 1,277,845,885.68/45,167.60
  6. Step 6: Final answer
    x = 28,291.21

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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.