Home / 81,053.73-121,566.42-36,670.05

Finding the Fourth Proportional to 81,053.73, 121,566.42 and 36,670.05

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Solution

The fourth proportional to 81,053.73, 121,566.42 and 36,670.05 is: 54,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,053.73 : 121,566.42 = 36,670.05 : x
  2. Step 2: Convert to fraction form
    81,053.73/121,566.42 = 36,670.05/x
  3. Step 3: Cross multiply
    81,053.73x = 121,566.42 × 36,670.05
  4. Step 4: Simplify right side
    81,053.73x = 4,457,846,699.72
  5. Step 5: Solve for x
    x = 4,457,846,699.72/81,053.73
  6. Step 6: Final answer
    x = 54,998.66

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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.