Home / 61,043.72-91,579.76-18,921.56

Finding the Fourth Proportional to 61,043.72, 91,579.76 and 18,921.56

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Solution

The fourth proportional to 61,043.72, 91,579.76 and 18,921.56 is: 28,386.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,043.72 : 91,579.76 = 18,921.56 : x
  2. Step 2: Convert to fraction form
    61,043.72/91,579.76 = 18,921.56/x
  3. Step 3: Cross multiply
    61,043.72x = 91,579.76 × 18,921.56
  4. Step 4: Simplify right side
    61,043.72x = 1,732,831,371.12
  5. Step 5: Solve for x
    x = 1,732,831,371.12/61,043.72
  6. Step 6: Final answer
    x = 28,386.73

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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.