Home / 85,448.87-128,199.26-60,537.12

Finding the Fourth Proportional to 85,448.87, 128,199.26 and 60,537.12

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Solution

The fourth proportional to 85,448.87, 128,199.26 and 60,537.12 is: 90,824.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,448.87 : 128,199.26 = 60,537.12 : x
  2. Step 2: Convert to fraction form
    85,448.87/128,199.26 = 60,537.12/x
  3. Step 3: Cross multiply
    85,448.87x = 128,199.26 × 60,537.12
  4. Step 4: Simplify right side
    85,448.87x = 7,760,813,986.53
  5. Step 5: Solve for x
    x = 7,760,813,986.53/85,448.87
  6. Step 6: Final answer
    x = 90,824.07

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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.