Home / 51,817.16-77,667.42-20,615.96

Finding the Fourth Proportional to 51,817.16, 77,667.42 and 20,615.96

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Solution

The fourth proportional to 51,817.16, 77,667.42 and 20,615.96 is: 30,900.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,817.16 : 77,667.42 = 20,615.96 : x
  2. Step 2: Convert to fraction form
    51,817.16/77,667.42 = 20,615.96/x
  3. Step 3: Cross multiply
    51,817.16x = 77,667.42 × 20,615.96
  4. Step 4: Simplify right side
    51,817.16x = 1,601,188,424.02
  5. Step 5: Solve for x
    x = 1,601,188,424.02/51,817.16
  6. Step 6: Final answer
    x = 30,900.74

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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.