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Finding the Fourth Proportional to 85,382.64, 128,136.96 and 41,034.96

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Solution

The fourth proportional to 85,382.64, 128,136.96 and 41,034.96 is: 61,582.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,382.64 : 128,136.96 = 41,034.96 : x
  2. Step 2: Convert to fraction form
    85,382.64/128,136.96 = 41,034.96/x
  3. Step 3: Cross multiply
    85,382.64x = 128,136.96 × 41,034.96
  4. Step 4: Simplify right side
    85,382.64x = 5,258,095,028.12
  5. Step 5: Solve for x
    x = 5,258,095,028.12/85,382.64
  6. Step 6: Final answer
    x = 61,582.72

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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.