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Finding the Fourth Proportional to 45,905.40, 68,858.10 and 40,073.40

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Solution

The fourth proportional to 45,905.40, 68,858.10 and 40,073.40 is: 60,110.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,905.40 : 68,858.10 = 40,073.40 : x
  2. Step 2: Convert to fraction form
    45,905.40/68,858.10 = 40,073.40/x
  3. Step 3: Cross multiply
    45,905.40x = 68,858.10 × 40,073.40
  4. Step 4: Simplify right side
    45,905.40x = 2,759,378,184.54
  5. Step 5: Solve for x
    x = 2,759,378,184.54/45,905.40
  6. Step 6: Final answer
    x = 60,110.10

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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.