Home / 71,999.72-99,359.36-40,168.60

Finding the Fourth Proportional to 71,999.72, 99,359.36 and 40,168.60

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Solution

The fourth proportional to 71,999.72, 99,359.36 and 40,168.60 is: 55,432.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.72 : 99,359.36 = 40,168.60 : x
  2. Step 2: Convert to fraction form
    71,999.72/99,359.36 = 40,168.60/x
  3. Step 3: Cross multiply
    71,999.72x = 99,359.36 × 40,168.60
  4. Step 4: Simplify right side
    71,999.72x = 3,991,126,388.10
  5. Step 5: Solve for x
    x = 3,991,126,388.10/71,999.72
  6. Step 6: Final answer
    x = 55,432.53

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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.