Home / 68,403.12-94,379.61-40,103.34

Finding the Fourth Proportional to 68,403.12, 94,379.61 and 40,103.34

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Solution

The fourth proportional to 68,403.12, 94,379.61 and 40,103.34 is: 55,332.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,403.12 : 94,379.61 = 40,103.34 : x
  2. Step 2: Convert to fraction form
    68,403.12/94,379.61 = 40,103.34/x
  3. Step 3: Cross multiply
    68,403.12x = 94,379.61 × 40,103.34
  4. Step 4: Simplify right side
    68,403.12x = 3,784,937,385.36
  5. Step 5: Solve for x
    x = 3,784,937,385.36/68,403.12
  6. Step 6: Final answer
    x = 55,332.82

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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.