Home / 71,999.76-99,359.36-40,168.62

Finding the Fourth Proportional to 71,999.76, 99,359.36 and 40,168.62

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Solution

The fourth proportional to 71,999.76, 99,359.36 and 40,168.62 is: 55,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,999.76 : 99,359.36 = 40,168.62 : x
  2. Step 2: Convert to fraction form
    71,999.76/99,359.36 = 40,168.62/x
  3. Step 3: Cross multiply
    71,999.76x = 99,359.36 × 40,168.62
  4. Step 4: Simplify right side
    71,999.76x = 3,991,128,375.28
  5. Step 5: Solve for x
    x = 3,991,128,375.28/71,999.76
  6. Step 6: Final answer
    x = 55,432.52

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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.