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Finding the Fourth Proportional to 54,653.40, 81,980.10 and 34,954.20

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Solution

The fourth proportional to 54,653.40, 81,980.10 and 34,954.20 is: 52,431.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,653.40 : 81,980.10 = 34,954.20 : x
  2. Step 2: Convert to fraction form
    54,653.40/81,980.10 = 34,954.20/x
  3. Step 3: Cross multiply
    54,653.40x = 81,980.10 × 34,954.20
  4. Step 4: Simplify right side
    54,653.40x = 2,865,548,811.42
  5. Step 5: Solve for x
    x = 2,865,548,811.42/54,653.40
  6. Step 6: Final answer
    x = 52,431.30

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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.