Home / 81,731.99-112,790.24-45,921.98

Finding the Fourth Proportional to 81,731.99, 112,790.24 and 45,921.98

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Solution

The fourth proportional to 81,731.99, 112,790.24 and 45,921.98 is: 63,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.99 : 112,790.24 = 45,921.98 : x
  2. Step 2: Convert to fraction form
    81,731.99/112,790.24 = 45,921.98/x
  3. Step 3: Cross multiply
    81,731.99x = 112,790.24 × 45,921.98
  4. Step 4: Simplify right side
    81,731.99x = 5,179,550,351.91
  5. Step 5: Solve for x
    x = 5,179,550,351.91/81,731.99
  6. Step 6: Final answer
    x = 63,372.38

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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.