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Finding the Fourth Proportional to 65,986.60, 99,052.80 and 51,260.80

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Solution

The fourth proportional to 65,986.60, 99,052.80 and 51,260.80 is: 76,947.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,986.60 : 99,052.80 = 51,260.80 : x
  2. Step 2: Convert to fraction form
    65,986.60/99,052.80 = 51,260.80/x
  3. Step 3: Cross multiply
    65,986.60x = 99,052.80 × 51,260.80
  4. Step 4: Simplify right side
    65,986.60x = 5,077,525,770.24
  5. Step 5: Solve for x
    x = 5,077,525,770.24/65,986.60
  6. Step 6: Final answer
    x = 76,947.83

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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.