Home / 68,409.12-94,420.30-40,123.92

Finding the Fourth Proportional to 68,409.12, 94,420.30 and 40,123.92

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Solution

The fourth proportional to 68,409.12, 94,420.30 and 40,123.92 is: 55,380.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,409.12 : 94,420.30 = 40,123.92 : x
  2. Step 2: Convert to fraction form
    68,409.12/94,420.30 = 40,123.92/x
  3. Step 3: Cross multiply
    68,409.12x = 94,420.30 × 40,123.92
  4. Step 4: Simplify right side
    68,409.12x = 3,788,512,563.58
  5. Step 5: Solve for x
    x = 3,788,512,563.58/68,409.12
  6. Step 6: Final answer
    x = 55,380.23

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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.