Home / 65,107.12-89,687.34-55,515.88

Finding the Fourth Proportional to 65,107.12, 89,687.34 and 55,515.88

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Solution

The fourth proportional to 65,107.12, 89,687.34 and 55,515.88 is: 76,475.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,107.12 : 89,687.34 = 55,515.88 : x
  2. Step 2: Convert to fraction form
    65,107.12/89,687.34 = 55,515.88/x
  3. Step 3: Cross multiply
    65,107.12x = 89,687.34 × 55,515.88
  4. Step 4: Simplify right side
    65,107.12x = 4,979,071,604.96
  5. Step 5: Solve for x
    x = 4,979,071,604.96/65,107.12
  6. Step 6: Final answer
    x = 76,475.07

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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.