Home / 57,119.82-78,823.20-31,625.68

Finding the Fourth Proportional to 57,119.82, 78,823.20 and 31,625.68

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Solution

The fourth proportional to 57,119.82, 78,823.20 and 31,625.68 is: 43,642.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,119.82 : 78,823.20 = 31,625.68 : x
  2. Step 2: Convert to fraction form
    57,119.82/78,823.20 = 31,625.68/x
  3. Step 3: Cross multiply
    57,119.82x = 78,823.20 × 31,625.68
  4. Step 4: Simplify right side
    57,119.82x = 2,492,837,299.78
  5. Step 5: Solve for x
    x = 2,492,837,299.78/57,119.82
  6. Step 6: Final answer
    x = 43,642.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.