Home / 85,604.10-128,511.45-54,014.10

Finding the Fourth Proportional to 85,604.10, 128,511.45 and 54,014.10

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Solution

The fourth proportional to 85,604.10, 128,511.45 and 54,014.10 is: 81,087.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,604.10 : 128,511.45 = 54,014.10 : x
  2. Step 2: Convert to fraction form
    85,604.10/128,511.45 = 54,014.10/x
  3. Step 3: Cross multiply
    85,604.10x = 128,511.45 × 54,014.10
  4. Step 4: Simplify right side
    85,604.10x = 6,941,430,311.45
  5. Step 5: Solve for x
    x = 6,941,430,311.45/85,604.10
  6. Step 6: Final answer
    x = 81,087.59

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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.