Home / 57,040.96-78,704.16-31,889.60

Finding the Fourth Proportional to 57,040.96, 78,704.16 and 31,889.60

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Solution

The fourth proportional to 57,040.96, 78,704.16 and 31,889.60 is: 44,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,040.96 : 78,704.16 = 31,889.60 : x
  2. Step 2: Convert to fraction form
    57,040.96/78,704.16 = 31,889.60/x
  3. Step 3: Cross multiply
    57,040.96x = 78,704.16 × 31,889.60
  4. Step 4: Simplify right side
    57,040.96x = 2,509,844,180.74
  5. Step 5: Solve for x
    x = 2,509,844,180.74/57,040.96
  6. Step 6: Final answer
    x = 44,000.74

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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.