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Finding the Fourth Proportional to 85,382.81, 128,080.36 and 32,792.29

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Solution

The fourth proportional to 85,382.81, 128,080.36 and 32,792.29 is: 49,190.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,382.81 : 128,080.36 = 32,792.29 : x
  2. Step 2: Convert to fraction form
    85,382.81/128,080.36 = 32,792.29/x
  3. Step 3: Cross multiply
    85,382.81x = 128,080.36 × 32,792.29
  4. Step 4: Simplify right side
    85,382.81x = 4,200,048,509.52
  5. Step 5: Solve for x
    x = 4,200,048,509.52/85,382.81
  6. Step 6: Final answer
    x = 49,190.80

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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.