Home / 80,927.26-121,392.06-31,009.90

Finding the Fourth Proportional to 80,927.26, 121,392.06 and 31,009.90

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Solution

The fourth proportional to 80,927.26, 121,392.06 and 31,009.90 is: 46,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,927.26 : 121,392.06 = 31,009.90 : x
  2. Step 2: Convert to fraction form
    80,927.26/121,392.06 = 31,009.90/x
  3. Step 3: Cross multiply
    80,927.26x = 121,392.06 × 31,009.90
  4. Step 4: Simplify right side
    80,927.26x = 3,764,355,641.39
  5. Step 5: Solve for x
    x = 3,764,355,641.39/80,927.26
  6. Step 6: Final answer
    x = 46,515.30

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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.