Home / 85,653.38-128,406.20-41,219.01

Finding the Fourth Proportional to 85,653.38, 128,406.20 and 41,219.01

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Solution

The fourth proportional to 85,653.38, 128,406.20 and 41,219.01 is: 61,792.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,653.38 : 128,406.20 = 41,219.01 : x
  2. Step 2: Convert to fraction form
    85,653.38/128,406.20 = 41,219.01/x
  3. Step 3: Cross multiply
    85,653.38x = 128,406.20 × 41,219.01
  4. Step 4: Simplify right side
    85,653.38x = 5,292,776,235.77
  5. Step 5: Solve for x
    x = 5,292,776,235.77/85,653.38
  6. Step 6: Final answer
    x = 61,792.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.