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Finding the Fourth Proportional to 65,808.87, 90,816.26 and 37,134.61

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Solution

The fourth proportional to 65,808.87, 90,816.26 and 37,134.61 is: 51,245.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,808.87 : 90,816.26 = 37,134.61 : x
  2. Step 2: Convert to fraction form
    65,808.87/90,816.26 = 37,134.61/x
  3. Step 3: Cross multiply
    65,808.87x = 90,816.26 × 37,134.61
  4. Step 4: Simplify right side
    65,808.87x = 3,372,425,813.76
  5. Step 5: Solve for x
    x = 3,372,425,813.76/65,808.87
  6. Step 6: Final answer
    x = 51,245.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.