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Finding the Fourth Proportional to 70,579.54, 105,775.86 and 51,771.51

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Solution

The fourth proportional to 70,579.54, 105,775.86 and 51,771.51 is: 77,588.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,579.54 : 105,775.86 = 51,771.51 : x
  2. Step 2: Convert to fraction form
    70,579.54/105,775.86 = 51,771.51/x
  3. Step 3: Cross multiply
    70,579.54x = 105,775.86 × 51,771.51
  4. Step 4: Simplify right side
    70,579.54x = 5,476,175,993.75
  5. Step 5: Solve for x
    x = 5,476,175,993.75/70,579.54
  6. Step 6: Final answer
    x = 77,588.72

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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.