Home / 57,206.07-78,940.40-31,712.19

Finding the Fourth Proportional to 57,206.07, 78,940.40 and 31,712.19

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Solution

The fourth proportional to 57,206.07, 78,940.40 and 31,712.19 is: 43,760.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,206.07 : 78,940.40 = 31,712.19 : x
  2. Step 2: Convert to fraction form
    57,206.07/78,940.40 = 31,712.19/x
  3. Step 3: Cross multiply
    57,206.07x = 78,940.40 × 31,712.19
  4. Step 4: Simplify right side
    57,206.07x = 2,503,372,804.92
  5. Step 5: Solve for x
    x = 2,503,372,804.92/57,206.07
  6. Step 6: Final answer
    x = 43,760.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.