Home / 40,734.36-61,018.38-20,971.40

Finding the Fourth Proportional to 40,734.36, 61,018.38 and 20,971.40

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Solution

The fourth proportional to 40,734.36, 61,018.38 and 20,971.40 is: 31,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,734.36 : 61,018.38 = 20,971.40 : x
  2. Step 2: Convert to fraction form
    40,734.36/61,018.38 = 20,971.40/x
  3. Step 3: Cross multiply
    40,734.36x = 61,018.38 × 20,971.40
  4. Step 4: Simplify right side
    40,734.36x = 1,279,640,549.24
  5. Step 5: Solve for x
    x = 1,279,640,549.24/40,734.36
  6. Step 6: Final answer
    x = 31,414.28

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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.