Home / 78,066.93-117,087.07-28,137.09

Finding the Fourth Proportional to 78,066.93, 117,087.07 and 28,137.09

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Solution

The fourth proportional to 78,066.93, 117,087.07 and 28,137.09 is: 42,200.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,066.93 : 117,087.07 = 28,137.09 : x
  2. Step 2: Convert to fraction form
    78,066.93/117,087.07 = 28,137.09/x
  3. Step 3: Cross multiply
    78,066.93x = 117,087.07 × 28,137.09
  4. Step 4: Simplify right side
    78,066.93x = 3,294,489,426.43
  5. Step 5: Solve for x
    x = 3,294,489,426.43/78,066.93
  6. Step 6: Final answer
    x = 42,200.83

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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.