Home / 51,120.32-70,546.56-28,760

Finding the Fourth Proportional to 51,120.32, 70,546.56 and 28,760

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Solution

The fourth proportional to 51,120.32, 70,546.56 and 28,760 is: 39,689.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,120.32 : 70,546.56 = 28,760 : x
  2. Step 2: Convert to fraction form
    51,120.32/70,546.56 = 28,760/x
  3. Step 3: Cross multiply
    51,120.32x = 70,546.56 × 28,760
  4. Step 4: Simplify right side
    51,120.32x = 2,028,919,065.60
  5. Step 5: Solve for x
    x = 2,028,919,065.60/51,120.32
  6. Step 6: Final answer
    x = 39,689.09

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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.