Home / 81,295.56-121,917.96-48,006.72

Finding the Fourth Proportional to 81,295.56, 121,917.96 and 48,006.72

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Solution

The fourth proportional to 81,295.56, 121,917.96 and 48,006.72 is: 71,995.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,295.56 : 121,917.96 = 48,006.72 : x
  2. Step 2: Convert to fraction form
    81,295.56/121,917.96 = 48,006.72/x
  3. Step 3: Cross multiply
    81,295.56x = 121,917.96 × 48,006.72
  4. Step 4: Simplify right side
    81,295.56x = 5,852,881,368.69
  5. Step 5: Solve for x
    x = 5,852,881,368.69/81,295.56
  6. Step 6: Final answer
    x = 71,995.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.