Home / 55,428.51-76,489.74-30,278.01

Finding the Fourth Proportional to 55,428.51, 76,489.74 and 30,278.01

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Solution

The fourth proportional to 55,428.51, 76,489.74 and 30,278.01 is: 41,782.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,428.51 : 76,489.74 = 30,278.01 : x
  2. Step 2: Convert to fraction form
    55,428.51/76,489.74 = 30,278.01/x
  3. Step 3: Cross multiply
    55,428.51x = 76,489.74 × 30,278.01
  4. Step 4: Simplify right side
    55,428.51x = 2,315,957,112.62
  5. Step 5: Solve for x
    x = 2,315,957,112.62/55,428.51
  6. Step 6: Final answer
    x = 41,782.78

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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.