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Finding the Fourth Proportional to 84,618.95, 126,942.98 and 28,464.48

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Solution

The fourth proportional to 84,618.95, 126,942.98 and 28,464.48 is: 42,701.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,618.95 : 126,942.98 = 28,464.48 : x
  2. Step 2: Convert to fraction form
    84,618.95/126,942.98 = 28,464.48/x
  3. Step 3: Cross multiply
    84,618.95x = 126,942.98 × 28,464.48
  4. Step 4: Simplify right side
    84,618.95x = 3,613,365,773.03
  5. Step 5: Solve for x
    x = 3,613,365,773.03/84,618.95
  6. Step 6: Final answer
    x = 42,701.62

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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.