Home / 71,705.24-98,945.21-39,872.24

Finding the Fourth Proportional to 71,705.24, 98,945.21 and 39,872.24

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Solution

The fourth proportional to 71,705.24, 98,945.21 and 39,872.24 is: 55,019.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,705.24 : 98,945.21 = 39,872.24 : x
  2. Step 2: Convert to fraction form
    71,705.24/98,945.21 = 39,872.24/x
  3. Step 3: Cross multiply
    71,705.24x = 98,945.21 × 39,872.24
  4. Step 4: Simplify right side
    71,705.24x = 3,945,167,159.97
  5. Step 5: Solve for x
    x = 3,945,167,159.97/71,705.24
  6. Step 6: Final answer
    x = 55,019.23

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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.