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Finding the Fourth Proportional to 40,377.76, 55,720.75 and 22,472.77

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Solution

The fourth proportional to 40,377.76, 55,720.75 and 22,472.77 is: 31,012.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,377.76 : 55,720.75 = 22,472.77 : x
  2. Step 2: Convert to fraction form
    40,377.76/55,720.75 = 22,472.77/x
  3. Step 3: Cross multiply
    40,377.76x = 55,720.75 × 22,472.77
  4. Step 4: Simplify right side
    40,377.76x = 1,252,199,738.28
  5. Step 5: Solve for x
    x = 1,252,199,738.28/40,377.76
  6. Step 6: Final answer
    x = 31,012.11

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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.