Home / 45,828.40-68,742.60-28,241.20

Finding the Fourth Proportional to 45,828.40, 68,742.60 and 28,241.20

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Solution

The fourth proportional to 45,828.40, 68,742.60 and 28,241.20 is: 42,361.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,828.40 : 68,742.60 = 28,241.20 : x
  2. Step 2: Convert to fraction form
    45,828.40/68,742.60 = 28,241.20/x
  3. Step 3: Cross multiply
    45,828.40x = 68,742.60 × 28,241.20
  4. Step 4: Simplify right side
    45,828.40x = 1,941,373,515.12
  5. Step 5: Solve for x
    x = 1,941,373,515.12/45,828.40
  6. Step 6: Final answer
    x = 42,361.80

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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.