Home / 145,021.72-217,507.92-39,816.04

Finding the Fourth Proportional to 145,021.72, 217,507.92 and 39,816.04

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Solution

The fourth proportional to 145,021.72, 217,507.92 and 39,816.04 is: 59,717.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,021.72 : 217,507.92 = 39,816.04 : x
  2. Step 2: Convert to fraction form
    145,021.72/217,507.92 = 39,816.04/x
  3. Step 3: Cross multiply
    145,021.72x = 217,507.92 × 39,816.04
  4. Step 4: Simplify right side
    145,021.72x = 8,660,304,043.04
  5. Step 5: Solve for x
    x = 8,660,304,043.04/145,021.72
  6. Step 6: Final answer
    x = 59,717.29

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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.