Home / 55,311.36-76,329-30,160.32

Finding the Fourth Proportional to 55,311.36, 76,329 and 30,160.32

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Solution

The fourth proportional to 55,311.36, 76,329 and 30,160.32 is: 41,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,311.36 : 76,329 = 30,160.32 : x
  2. Step 2: Convert to fraction form
    55,311.36/76,329 = 30,160.32/x
  3. Step 3: Cross multiply
    55,311.36x = 76,329 × 30,160.32
  4. Step 4: Simplify right side
    55,311.36x = 2,302,107,065.28
  5. Step 5: Solve for x
    x = 2,302,107,065.28/55,311.36
  6. Step 6: Final answer
    x = 41,620.87

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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.