Home / 51,918.10-77,880.96-18,638.46

Finding the Fourth Proportional to 51,918.10, 77,880.96 and 18,638.46

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Solution

The fourth proportional to 51,918.10, 77,880.96 and 18,638.46 is: 27,959.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,918.10 : 77,880.96 = 18,638.46 : x
  2. Step 2: Convert to fraction form
    51,918.10/77,880.96 = 18,638.46/x
  3. Step 3: Cross multiply
    51,918.10x = 77,880.96 × 18,638.46
  4. Step 4: Simplify right side
    51,918.10x = 1,451,581,157.72
  5. Step 5: Solve for x
    x = 1,451,581,157.72/51,918.10
  6. Step 6: Final answer
    x = 27,959.06

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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.