Home / 40,728.24-56,128.92-31,761.60

Finding the Fourth Proportional to 40,728.24, 56,128.92 and 31,761.60

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Solution

The fourth proportional to 40,728.24, 56,128.92 and 31,761.60 is: 43,771.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.24 : 56,128.92 = 31,761.60 : x
  2. Step 2: Convert to fraction form
    40,728.24/56,128.92 = 31,761.60/x
  3. Step 3: Cross multiply
    40,728.24x = 56,128.92 × 31,761.60
  4. Step 4: Simplify right side
    40,728.24x = 1,782,744,305.47
  5. Step 5: Solve for x
    x = 1,782,744,305.47/40,728.24
  6. Step 6: Final answer
    x = 43,771.70

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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.