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Finding the Fourth Proportional to 45,195.40, 67,817.40 and 18,902.80

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Solution

The fourth proportional to 45,195.40, 67,817.40 and 18,902.80 is: 28,364.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,195.40 : 67,817.40 = 18,902.80 : x
  2. Step 2: Convert to fraction form
    45,195.40/67,817.40 = 18,902.80/x
  3. Step 3: Cross multiply
    45,195.40x = 67,817.40 × 18,902.80
  4. Step 4: Simplify right side
    45,195.40x = 1,281,938,748.72
  5. Step 5: Solve for x
    x = 1,281,938,748.72/45,195.40
  6. Step 6: Final answer
    x = 28,364.36

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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.