Home / 45,381.06-68,027.13-20,427.39

Finding the Fourth Proportional to 45,381.06, 68,027.13 and 20,427.39

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Solution

The fourth proportional to 45,381.06, 68,027.13 and 20,427.39 is: 30,621.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,381.06 : 68,027.13 = 20,427.39 : x
  2. Step 2: Convert to fraction form
    45,381.06/68,027.13 = 20,427.39/x
  3. Step 3: Cross multiply
    45,381.06x = 68,027.13 × 20,427.39
  4. Step 4: Simplify right side
    45,381.06x = 1,389,616,715.09
  5. Step 5: Solve for x
    x = 1,389,616,715.09/45,381.06
  6. Step 6: Final answer
    x = 30,621.07

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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.