Home / 30,449.40-45,674.10-28,116.60

Finding the Fourth Proportional to 30,449.40, 45,674.10 and 28,116.60

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Solution

The fourth proportional to 30,449.40, 45,674.10 and 28,116.60 is: 42,174.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,449.40 : 45,674.10 = 28,116.60 : x
  2. Step 2: Convert to fraction form
    30,449.40/45,674.10 = 28,116.60/x
  3. Step 3: Cross multiply
    30,449.40x = 45,674.10 × 28,116.60
  4. Step 4: Simplify right side
    30,449.40x = 1,284,200,400.06
  5. Step 5: Solve for x
    x = 1,284,200,400.06/30,449.40
  6. Step 6: Final answer
    x = 42,174.90

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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.