Home / 80,360.75-120,541.13-31,112.75

Finding the Fourth Proportional to 80,360.75, 120,541.13 and 31,112.75

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Solution

The fourth proportional to 80,360.75, 120,541.13 and 31,112.75 is: 46,669.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,360.75 : 120,541.13 = 31,112.75 : x
  2. Step 2: Convert to fraction form
    80,360.75/120,541.13 = 31,112.75/x
  3. Step 3: Cross multiply
    80,360.75x = 120,541.13 × 31,112.75
  4. Step 4: Simplify right side
    80,360.75x = 3,750,365,886.84
  5. Step 5: Solve for x
    x = 3,750,365,886.84/80,360.75
  6. Step 6: Final answer
    x = 46,669.13

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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.