Home / 71,640.72-98,876.79-41,421.24

Finding the Fourth Proportional to 71,640.72, 98,876.79 and 41,421.24

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Solution

The fourth proportional to 71,640.72, 98,876.79 and 41,421.24 is: 57,168.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,640.72 : 98,876.79 = 41,421.24 : x
  2. Step 2: Convert to fraction form
    71,640.72/98,876.79 = 41,421.24/x
  3. Step 3: Cross multiply
    71,640.72x = 98,876.79 × 41,421.24
  4. Step 4: Simplify right side
    71,640.72x = 4,095,599,249.02
  5. Step 5: Solve for x
    x = 4,095,599,249.02/71,640.72
  6. Step 6: Final answer
    x = 57,168.59

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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.