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Finding the Fourth Proportional to 51,394.30, 70,945.99 and 31,257.64

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Solution

The fourth proportional to 51,394.30, 70,945.99 and 31,257.64 is: 43,148.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,394.30 : 70,945.99 = 31,257.64 : x
  2. Step 2: Convert to fraction form
    51,394.30/70,945.99 = 31,257.64/x
  3. Step 3: Cross multiply
    51,394.30x = 70,945.99 × 31,257.64
  4. Step 4: Simplify right side
    51,394.30x = 2,217,604,214.86
  5. Step 5: Solve for x
    x = 2,217,604,214.86/51,394.30
  6. Step 6: Final answer
    x = 43,148.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.