Home / 76,840.21-115,246.26-20,667.16

Finding the Fourth Proportional to 76,840.21, 115,246.26 and 20,667.16

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Solution

The fourth proportional to 76,840.21, 115,246.26 and 20,667.16 is: 30,996.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,840.21 : 115,246.26 = 20,667.16 : x
  2. Step 2: Convert to fraction form
    76,840.21/115,246.26 = 20,667.16/x
  3. Step 3: Cross multiply
    76,840.21x = 115,246.26 × 20,667.16
  4. Step 4: Simplify right side
    76,840.21x = 2,381,812,894.82
  5. Step 5: Solve for x
    x = 2,381,812,894.82/76,840.21
  6. Step 6: Final answer
    x = 30,996.96

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1.5x scale

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.