Home / 72,429.80-108,675.90-39,173.27

Finding the Fourth Proportional to 72,429.80, 108,675.90 and 39,173.27

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Solution

The fourth proportional to 72,429.80, 108,675.90 and 39,173.27 is: 58,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,429.80 : 108,675.90 = 39,173.27 : x
  2. Step 2: Convert to fraction form
    72,429.80/108,675.90 = 39,173.27/x
  3. Step 3: Cross multiply
    72,429.80x = 108,675.90 × 39,173.27
  4. Step 4: Simplify right side
    72,429.80x = 4,257,190,551.29
  5. Step 5: Solve for x
    x = 4,257,190,551.29/72,429.80
  6. Step 6: Final answer
    x = 58,776.79

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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.