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Finding the Fourth Proportional to 68,903.49, 95,086.80 and 40,242.99

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Solution

The fourth proportional to 68,903.49, 95,086.80 and 40,242.99 is: 55,535.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,903.49 : 95,086.80 = 40,242.99 : x
  2. Step 2: Convert to fraction form
    68,903.49/95,086.80 = 40,242.99/x
  3. Step 3: Cross multiply
    68,903.49x = 95,086.80 × 40,242.99
  4. Step 4: Simplify right side
    68,903.49x = 3,826,577,141.53
  5. Step 5: Solve for x
    x = 3,826,577,141.53/68,903.49
  6. Step 6: Final answer
    x = 55,535.32

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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.