Home / 72,179.65-99,606.09-40,351.51

Finding the Fourth Proportional to 72,179.65, 99,606.09 and 40,351.51

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Solution

The fourth proportional to 72,179.65, 99,606.09 and 40,351.51 is: 55,684.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,179.65 : 99,606.09 = 40,351.51 : x
  2. Step 2: Convert to fraction form
    72,179.65/99,606.09 = 40,351.51/x
  3. Step 3: Cross multiply
    72,179.65x = 99,606.09 × 40,351.51
  4. Step 4: Simplify right side
    72,179.65x = 4,019,256,136.70
  5. Step 5: Solve for x
    x = 4,019,256,136.70/72,179.65
  6. Step 6: Final answer
    x = 55,684.06

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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.