Home / 85,723.36-128,585.12-23,394.40

Finding the Fourth Proportional to 85,723.36, 128,585.12 and 23,394.40

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Solution

The fourth proportional to 85,723.36, 128,585.12 and 23,394.40 is: 35,091.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,723.36 : 128,585.12 = 23,394.40 : x
  2. Step 2: Convert to fraction form
    85,723.36/128,585.12 = 23,394.40/x
  3. Step 3: Cross multiply
    85,723.36x = 128,585.12 × 23,394.40
  4. Step 4: Simplify right side
    85,723.36x = 3,008,171,731.33
  5. Step 5: Solve for x
    x = 3,008,171,731.33/85,723.36
  6. Step 6: Final answer
    x = 35,091.62

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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.