Home / 45,518.40-68,287.20-19,209.60

Finding the Fourth Proportional to 45,518.40, 68,287.20 and 19,209.60

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Solution

The fourth proportional to 45,518.40, 68,287.20 and 19,209.60 is: 28,818.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,518.40 : 68,287.20 = 19,209.60 : x
  2. Step 2: Convert to fraction form
    45,518.40/68,287.20 = 19,209.60/x
  3. Step 3: Cross multiply
    45,518.40x = 68,287.20 × 19,209.60
  4. Step 4: Simplify right side
    45,518.40x = 1,311,769,797.12
  5. Step 5: Solve for x
    x = 1,311,769,797.12/45,518.40
  6. Step 6: Final answer
    x = 28,818.45

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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.