Home / 55,579.48-76,698.78-30,428.44

Finding the Fourth Proportional to 55,579.48, 76,698.78 and 30,428.44

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Solution

The fourth proportional to 55,579.48, 76,698.78 and 30,428.44 is: 41,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,579.48 : 76,698.78 = 30,428.44 : x
  2. Step 2: Convert to fraction form
    55,579.48/76,698.78 = 30,428.44/x
  3. Step 3: Cross multiply
    55,579.48x = 76,698.78 × 30,428.44
  4. Step 4: Simplify right side
    55,579.48x = 2,333,824,225.30
  5. Step 5: Solve for x
    x = 2,333,824,225.30/55,579.48
  6. Step 6: Final answer
    x = 41,990.75

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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.