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Finding the Fourth Proportional to 68,004.84, 102,040.80 and 30,591.40

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Solution

The fourth proportional to 68,004.84, 102,040.80 and 30,591.40 is: 45,902.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,004.84 : 102,040.80 = 30,591.40 : x
  2. Step 2: Convert to fraction form
    68,004.84/102,040.80 = 30,591.40/x
  3. Step 3: Cross multiply
    68,004.84x = 102,040.80 × 30,591.40
  4. Step 4: Simplify right side
    68,004.84x = 3,121,570,929.12
  5. Step 5: Solve for x
    x = 3,121,570,929.12/68,004.84
  6. Step 6: Final answer
    x = 45,902.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.