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Finding the Fourth Proportional to 45,871, 68,818.06 and 13,039

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Solution

The fourth proportional to 45,871, 68,818.06 and 13,039 is: 19,561.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,871 : 68,818.06 = 13,039 : x
  2. Step 2: Convert to fraction form
    45,871/68,818.06 = 13,039/x
  3. Step 3: Cross multiply
    45,871x = 68,818.06 × 13,039
  4. Step 4: Simplify right side
    45,871x = 897,318,684.34
  5. Step 5: Solve for x
    x = 897,318,684.34/45,871
  6. Step 6: Final answer
    x = 19,561.79

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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.