Home / 56,917.89-78,374.79-51,579.18

Finding the Fourth Proportional to 56,917.89, 78,374.79 and 51,579.18

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Solution

The fourth proportional to 56,917.89, 78,374.79 and 51,579.18 is: 71,023.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,917.89 : 78,374.79 = 51,579.18 : x
  2. Step 2: Convert to fraction form
    56,917.89/78,374.79 = 51,579.18/x
  3. Step 3: Cross multiply
    56,917.89x = 78,374.79 × 51,579.18
  4. Step 4: Simplify right side
    56,917.89x = 4,042,507,400.87
  5. Step 5: Solve for x
    x = 4,042,507,400.87/56,917.89
  6. Step 6: Final answer
    x = 71,023.49

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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.