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Finding the Fourth Proportional to 77,446.70, 115,878.45 and 51,202.70

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Solution

The fourth proportional to 77,446.70, 115,878.45 and 51,202.70 is: 76,611.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,446.70 : 115,878.45 = 51,202.70 : x
  2. Step 2: Convert to fraction form
    77,446.70/115,878.45 = 51,202.70/x
  3. Step 3: Cross multiply
    77,446.70x = 115,878.45 × 51,202.70
  4. Step 4: Simplify right side
    77,446.70x = 5,933,289,511.82
  5. Step 5: Solve for x
    x = 5,933,289,511.82/77,446.70
  6. Step 6: Final answer
    x = 76,611.26

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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.