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Finding the Fourth Proportional to 85,033.98, 127,288.44 and 55,387.98

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Solution

The fourth proportional to 85,033.98, 127,288.44 and 55,387.98 is: 82,910.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,033.98 : 127,288.44 = 55,387.98 : x
  2. Step 2: Convert to fraction form
    85,033.98/127,288.44 = 55,387.98/x
  3. Step 3: Cross multiply
    85,033.98x = 127,288.44 × 55,387.98
  4. Step 4: Simplify right side
    85,033.98x = 7,050,249,568.95
  5. Step 5: Solve for x
    x = 7,050,249,568.95/85,033.98
  6. Step 6: Final answer
    x = 82,910.97

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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.