Home / 55,190.20-76,160.28-30,039.72

Finding the Fourth Proportional to 55,190.20, 76,160.28 and 30,039.72

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Solution

The fourth proportional to 55,190.20, 76,160.28 and 30,039.72 is: 41,453.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,190.20 : 76,160.28 = 30,039.72 : x
  2. Step 2: Convert to fraction form
    55,190.20/76,160.28 = 30,039.72/x
  3. Step 3: Cross multiply
    55,190.20x = 76,160.28 × 30,039.72
  4. Step 4: Simplify right side
    55,190.20x = 2,287,833,486.32
  5. Step 5: Solve for x
    x = 2,287,833,486.32/55,190.20
  6. Step 6: Final answer
    x = 41,453.62

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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.