Home / 76,971.06-115,463.88-30,213

Finding the Fourth Proportional to 76,971.06, 115,463.88 and 30,213

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Solution

The fourth proportional to 76,971.06, 115,463.88 and 30,213 is: 45,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,971.06 : 115,463.88 = 30,213 : x
  2. Step 2: Convert to fraction form
    76,971.06/115,463.88 = 30,213/x
  3. Step 3: Cross multiply
    76,971.06x = 115,463.88 × 30,213
  4. Step 4: Simplify right side
    76,971.06x = 3,488,510,206.44
  5. Step 5: Solve for x
    x = 3,488,510,206.44/76,971.06
  6. Step 6: Final answer
    x = 45,322.36

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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.