Home / 68,406.10-94,416.16-40,120.90

Finding the Fourth Proportional to 68,406.10, 94,416.16 and 40,120.90

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Solution

The fourth proportional to 68,406.10, 94,416.16 and 40,120.90 is: 55,376.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.10 : 94,416.16 = 40,120.90 : x
  2. Step 2: Convert to fraction form
    68,406.10/94,416.16 = 40,120.90/x
  3. Step 3: Cross multiply
    68,406.10x = 94,416.16 × 40,120.90
  4. Step 4: Simplify right side
    68,406.10x = 3,788,061,313.74
  5. Step 5: Solve for x
    x = 3,788,061,313.74/68,406.10
  6. Step 6: Final answer
    x = 55,376.07

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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.