Home / 85,905.42-128,873.61-26,727.18

Finding the Fourth Proportional to 85,905.42, 128,873.61 and 26,727.18

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Solution

The fourth proportional to 85,905.42, 128,873.61 and 26,727.18 is: 40,095.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,905.42 : 128,873.61 = 26,727.18 : x
  2. Step 2: Convert to fraction form
    85,905.42/128,873.61 = 26,727.18/x
  3. Step 3: Cross multiply
    85,905.42x = 128,873.61 × 26,727.18
  4. Step 4: Simplify right side
    85,905.42x = 3,444,428,171.72
  5. Step 5: Solve for x
    x = 3,444,428,171.72/85,905.42
  6. Step 6: Final answer
    x = 40,095.59

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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.