Home / 45,385.20-68,020.20-40,431.60

Finding the Fourth Proportional to 45,385.20, 68,020.20 and 40,431.60

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Solution

The fourth proportional to 45,385.20, 68,020.20 and 40,431.60 is: 60,596.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,385.20 : 68,020.20 = 40,431.60 : x
  2. Step 2: Convert to fraction form
    45,385.20/68,020.20 = 40,431.60/x
  3. Step 3: Cross multiply
    45,385.20x = 68,020.20 × 40,431.60
  4. Step 4: Simplify right side
    45,385.20x = 2,750,165,518.32
  5. Step 5: Solve for x
    x = 2,750,165,518.32/45,385.20
  6. Step 6: Final answer
    x = 60,596.09

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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.