Home / 45,722.40-68,583.60-28,135.20

Finding the Fourth Proportional to 45,722.40, 68,583.60 and 28,135.20

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Solution

The fourth proportional to 45,722.40, 68,583.60 and 28,135.20 is: 42,202.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,722.40 : 68,583.60 = 28,135.20 : x
  2. Step 2: Convert to fraction form
    45,722.40/68,583.60 = 28,135.20/x
  3. Step 3: Cross multiply
    45,722.40x = 68,583.60 × 28,135.20
  4. Step 4: Simplify right side
    45,722.40x = 1,929,613,302.72
  5. Step 5: Solve for x
    x = 1,929,613,302.72/45,722.40
  6. Step 6: Final answer
    x = 42,202.80

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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.