Home / 68,421.30-94,421.43-40,127.10

Finding the Fourth Proportional to 68,421.30, 94,421.43 and 40,127.10

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Solution

The fourth proportional to 68,421.30, 94,421.43 and 40,127.10 is: 55,375.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,421.30 : 94,421.43 = 40,127.10 : x
  2. Step 2: Convert to fraction form
    68,421.30/94,421.43 = 40,127.10/x
  3. Step 3: Cross multiply
    68,421.30x = 94,421.43 × 40,127.10
  4. Step 4: Simplify right side
    68,421.30x = 3,788,858,163.75
  5. Step 5: Solve for x
    x = 3,788,858,163.75/68,421.30
  6. Step 6: Final answer
    x = 55,375.42

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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.