Home / 72,009.23-99,371.88-39,744.09

Finding the Fourth Proportional to 72,009.23, 99,371.88 and 39,744.09

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Solution

The fourth proportional to 72,009.23, 99,371.88 and 39,744.09 is: 54,846.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,009.23 : 99,371.88 = 39,744.09 : x
  2. Step 2: Convert to fraction form
    72,009.23/99,371.88 = 39,744.09/x
  3. Step 3: Cross multiply
    72,009.23x = 99,371.88 × 39,744.09
  4. Step 4: Simplify right side
    72,009.23x = 3,949,444,942.19
  5. Step 5: Solve for x
    x = 3,949,444,942.19/72,009.23
  6. Step 6: Final answer
    x = 54,846.37

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1.5x scale

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.