Home / 40,945.78-61,419.44-12,865.32

Finding the Fourth Proportional to 40,945.78, 61,419.44 and 12,865.32

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Solution

The fourth proportional to 40,945.78, 61,419.44 and 12,865.32 is: 19,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,945.78 : 61,419.44 = 12,865.32 : x
  2. Step 2: Convert to fraction form
    40,945.78/61,419.44 = 12,865.32/x
  3. Step 3: Cross multiply
    40,945.78x = 61,419.44 × 12,865.32
  4. Step 4: Simplify right side
    40,945.78x = 790,180,749.82
  5. Step 5: Solve for x
    x = 790,180,749.82/40,945.78
  6. Step 6: Final answer
    x = 19,298.22

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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.