Home / 57,889.78-86,836.47-19,938.64

Finding the Fourth Proportional to 57,889.78, 86,836.47 and 19,938.64

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Solution

The fourth proportional to 57,889.78, 86,836.47 and 19,938.64 is: 29,908.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,889.78 : 86,836.47 = 19,938.64 : x
  2. Step 2: Convert to fraction form
    57,889.78/86,836.47 = 19,938.64/x
  3. Step 3: Cross multiply
    57,889.78x = 86,836.47 × 19,938.64
  4. Step 4: Simplify right side
    57,889.78x = 1,731,401,114.20
  5. Step 5: Solve for x
    x = 1,731,401,114.20/57,889.78
  6. Step 6: Final answer
    x = 29,908.58

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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.