Home / 40,740.60-61,112.18-12,660.80

Finding the Fourth Proportional to 40,740.60, 61,112.18 and 12,660.80

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Solution

The fourth proportional to 40,740.60, 61,112.18 and 12,660.80 is: 18,991.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,740.60 : 61,112.18 = 12,660.80 : x
  2. Step 2: Convert to fraction form
    40,740.60/61,112.18 = 12,660.80/x
  3. Step 3: Cross multiply
    40,740.60x = 61,112.18 × 12,660.80
  4. Step 4: Simplify right side
    40,740.60x = 773,728,719.68
  5. Step 5: Solve for x
    x = 773,728,719.68/40,740.60
  6. Step 6: Final answer
    x = 18,991.59

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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.