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Finding the Fourth Proportional to 84,927.80, 127,245.90 and 55,330.40

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Solution

The fourth proportional to 84,927.80, 127,245.90 and 55,330.40 is: 82,900.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,927.80 : 127,245.90 = 55,330.40 : x
  2. Step 2: Convert to fraction form
    84,927.80/127,245.90 = 55,330.40/x
  3. Step 3: Cross multiply
    84,927.80x = 127,245.90 × 55,330.40
  4. Step 4: Simplify right side
    84,927.80x = 7,040,566,545.36
  5. Step 5: Solve for x
    x = 7,040,566,545.36/84,927.80
  6. Step 6: Final answer
    x = 82,900.61

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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.