Home / 55,621.88-76,758.26-30,128.28

Finding the Fourth Proportional to 55,621.88, 76,758.26 and 30,128.28

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Solution

The fourth proportional to 55,621.88, 76,758.26 and 30,128.28 is: 41,577.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,621.88 : 76,758.26 = 30,128.28 : x
  2. Step 2: Convert to fraction form
    55,621.88/76,758.26 = 30,128.28/x
  3. Step 3: Cross multiply
    55,621.88x = 76,758.26 × 30,128.28
  4. Step 4: Simplify right side
    55,621.88x = 2,312,594,198.95
  5. Step 5: Solve for x
    x = 2,312,594,198.95/55,621.88
  6. Step 6: Final answer
    x = 41,577.06

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1.5x scale

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.