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Finding the Fourth Proportional to 56,679, 85,020.30 and 17,236.47

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Solution

The fourth proportional to 56,679, 85,020.30 and 17,236.47 is: 25,855.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,679 : 85,020.30 = 17,236.47 : x
  2. Step 2: Convert to fraction form
    56,679/85,020.30 = 17,236.47/x
  3. Step 3: Cross multiply
    56,679x = 85,020.30 × 17,236.47
  4. Step 4: Simplify right side
    56,679x = 1,465,449,850.34
  5. Step 5: Solve for x
    x = 1,465,449,850.34/56,679
  6. Step 6: Final answer
    x = 25,855.25

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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.