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Finding the Fourth Proportional to 86,830.70, 130,251.12 and 33,522.98

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Solution

The fourth proportional to 86,830.70, 130,251.12 and 33,522.98 is: 50,286.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,830.70 : 130,251.12 = 33,522.98 : x
  2. Step 2: Convert to fraction form
    86,830.70/130,251.12 = 33,522.98/x
  3. Step 3: Cross multiply
    86,830.70x = 130,251.12 × 33,522.98
  4. Step 4: Simplify right side
    86,830.70x = 4,366,405,690.74
  5. Step 5: Solve for x
    x = 4,366,405,690.74/86,830.70
  6. Step 6: Final answer
    x = 50,286.43

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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.