Home / 45,268.25-67,902.87-13,678.57

Finding the Fourth Proportional to 45,268.25, 67,902.87 and 13,678.57

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Solution

The fourth proportional to 45,268.25, 67,902.87 and 13,678.57 is: 20,518.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,268.25 : 67,902.87 = 13,678.57 : x
  2. Step 2: Convert to fraction form
    45,268.25/67,902.87 = 13,678.57/x
  3. Step 3: Cross multiply
    45,268.25x = 67,902.87 × 13,678.57
  4. Step 4: Simplify right side
    45,268.25x = 928,814,296.67
  5. Step 5: Solve for x
    x = 928,814,296.67/45,268.25
  6. Step 6: Final answer
    x = 20,518.01

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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.