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Finding the Fourth Proportional to 115,618, 173,427 and 28,066

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Solution

The fourth proportional to 115,618, 173,427 and 28,066 is: 42,099

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,618 : 173,427 = 28,066 : x
  2. Step 2: Convert to fraction form
    115,618/173,427 = 28,066/x
  3. Step 3: Cross multiply
    115,618x = 173,427 × 28,066
  4. Step 4: Simplify right side
    115,618x = 4,867,402,182
  5. Step 5: Solve for x
    x = 4,867,402,182/115,618
  6. Step 6: Final answer
    x = 42,099

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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.