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Finding the Fourth Proportional to 84,745.55, 127,117.41 and 20,704.27

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Solution

The fourth proportional to 84,745.55, 127,117.41 and 20,704.27 is: 31,056.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,745.55 : 127,117.41 = 20,704.27 : x
  2. Step 2: Convert to fraction form
    84,745.55/127,117.41 = 20,704.27/x
  3. Step 3: Cross multiply
    84,745.55x = 127,117.41 × 20,704.27
  4. Step 4: Simplify right side
    84,745.55x = 2,631,873,178.34
  5. Step 5: Solve for x
    x = 2,631,873,178.34/84,745.55
  6. Step 6: Final answer
    x = 31,056.18

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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.