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Finding the Fourth Proportional to 68,808.38, 94,955.73 and 40,147.74

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Solution

The fourth proportional to 68,808.38, 94,955.73 and 40,147.74 is: 55,403.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,808.38 : 94,955.73 = 40,147.74 : x
  2. Step 2: Convert to fraction form
    68,808.38/94,955.73 = 40,147.74/x
  3. Step 3: Cross multiply
    68,808.38x = 94,955.73 × 40,147.74
  4. Step 4: Simplify right side
    68,808.38x = 3,812,257,959.55
  5. Step 5: Solve for x
    x = 3,812,257,959.55/68,808.38
  6. Step 6: Final answer
    x = 55,403.98

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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.