Home / 85,580.38-128,333.12-40,614.62

Finding the Fourth Proportional to 85,580.38, 128,333.12 and 40,614.62

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Solution

The fourth proportional to 85,580.38, 128,333.12 and 40,614.62 is: 60,904.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.38 : 128,333.12 = 40,614.62 : x
  2. Step 2: Convert to fraction form
    85,580.38/128,333.12 = 40,614.62/x
  3. Step 3: Cross multiply
    85,580.38x = 128,333.12 × 40,614.62
  4. Step 4: Simplify right side
    85,580.38x = 5,212,201,223.05
  5. Step 5: Solve for x
    x = 5,212,201,223.05/85,580.38
  6. Step 6: Final answer
    x = 60,904.16

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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.