Home / 80,980.67-121,221.79-52,840.19

Finding the Fourth Proportional to 80,980.67, 121,221.79 and 52,840.19

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Solution

The fourth proportional to 80,980.67, 121,221.79 and 52,840.19 is: 79,097.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,980.67 : 121,221.79 = 52,840.19 : x
  2. Step 2: Convert to fraction form
    80,980.67/121,221.79 = 52,840.19/x
  3. Step 3: Cross multiply
    80,980.67x = 121,221.79 × 52,840.19
  4. Step 4: Simplify right side
    80,980.67x = 6,405,382,415.74
  5. Step 5: Solve for x
    x = 6,405,382,415.74/80,980.67
  6. Step 6: Final answer
    x = 79,097.67

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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.