Home / 81,731.95-112,790.19-45,921.94

Finding the Fourth Proportional to 81,731.95, 112,790.19 and 45,921.94

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Solution

The fourth proportional to 81,731.95, 112,790.19 and 45,921.94 is: 63,372.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,731.95 : 112,790.19 = 45,921.94 : x
  2. Step 2: Convert to fraction form
    81,731.95/112,790.19 = 45,921.94/x
  3. Step 3: Cross multiply
    81,731.95x = 112,790.19 × 45,921.94
  4. Step 4: Simplify right side
    81,731.95x = 5,179,544,337.77
  5. Step 5: Solve for x
    x = 5,179,544,337.77/81,731.95
  6. Step 6: Final answer
    x = 63,372.33

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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.