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Finding the Fourth Proportional to 65,975.99, 99,101.09 and 53,340.05

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Solution

The fourth proportional to 65,975.99, 99,101.09 and 53,340.05 is: 80,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,975.99 : 99,101.09 = 53,340.05 : x
  2. Step 2: Convert to fraction form
    65,975.99/99,101.09 = 53,340.05/x
  3. Step 3: Cross multiply
    65,975.99x = 99,101.09 × 53,340.05
  4. Step 4: Simplify right side
    65,975.99x = 5,286,057,476.76
  5. Step 5: Solve for x
    x = 5,286,057,476.76/65,975.99
  6. Step 6: Final answer
    x = 80,120.93

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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.