Home / 68,405.10-94,391.85-39,719.15

Finding the Fourth Proportional to 68,405.10, 94,391.85 and 39,719.15

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Solution

The fourth proportional to 68,405.10, 94,391.85 and 39,719.15 is: 54,808.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.10 : 94,391.85 = 39,719.15 : x
  2. Step 2: Convert to fraction form
    68,405.10/94,391.85 = 39,719.15/x
  3. Step 3: Cross multiply
    68,405.10x = 94,391.85 × 39,719.15
  4. Step 4: Simplify right side
    68,405.10x = 3,749,164,284.91
  5. Step 5: Solve for x
    x = 3,749,164,284.91/68,405.10
  6. Step 6: Final answer
    x = 54,808.26

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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.