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Finding the Fourth Proportional to 40,894.80, 56,440.80 and 22,991.28

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Solution

The fourth proportional to 40,894.80, 56,440.80 and 22,991.28 is: 31,731.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,894.80 : 56,440.80 = 22,991.28 : x
  2. Step 2: Convert to fraction form
    40,894.80/56,440.80 = 22,991.28/x
  3. Step 3: Cross multiply
    40,894.80x = 56,440.80 × 22,991.28
  4. Step 4: Simplify right side
    40,894.80x = 1,297,646,236.22
  5. Step 5: Solve for x
    x = 1,297,646,236.22/40,894.80
  6. Step 6: Final answer
    x = 31,731.33

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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.