Home / 55,528.80-76,629.12-30,378

Finding the Fourth Proportional to 55,528.80, 76,629.12 and 30,378

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Solution

The fourth proportional to 55,528.80, 76,629.12 and 30,378 is: 41,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,528.80 : 76,629.12 = 30,378 : x
  2. Step 2: Convert to fraction form
    55,528.80/76,629.12 = 30,378/x
  3. Step 3: Cross multiply
    55,528.80x = 76,629.12 × 30,378
  4. Step 4: Simplify right side
    55,528.80x = 2,327,839,407.36
  5. Step 5: Solve for x
    x = 2,327,839,407.36/55,528.80
  6. Step 6: Final answer
    x = 41,921.30

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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.