Home / 68,409.24-94,405.14-40,115.40

Finding the Fourth Proportional to 68,409.24, 94,405.14 and 40,115.40

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Solution

The fourth proportional to 68,409.24, 94,405.14 and 40,115.40 is: 55,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,409.24 : 94,405.14 = 40,115.40 : x
  2. Step 2: Convert to fraction form
    68,409.24/94,405.14 = 40,115.40/x
  3. Step 3: Cross multiply
    68,409.24x = 94,405.14 × 40,115.40
  4. Step 4: Simplify right side
    68,409.24x = 3,787,099,953.16
  5. Step 5: Solve for x
    x = 3,787,099,953.16/68,409.24
  6. Step 6: Final answer
    x = 55,359.48

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1.5x scale

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.