Home / 71,918.48-99,248.83-40,083.96

Finding the Fourth Proportional to 71,918.48, 99,248.83 and 40,083.96

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Solution

The fourth proportional to 71,918.48, 99,248.83 and 40,083.96 is: 55,316.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918.48 : 99,248.83 = 40,083.96 : x
  2. Step 2: Convert to fraction form
    71,918.48/99,248.83 = 40,083.96/x
  3. Step 3: Cross multiply
    71,918.48x = 99,248.83 × 40,083.96
  4. Step 4: Simplify right side
    71,918.48x = 3,978,286,403.74
  5. Step 5: Solve for x
    x = 3,978,286,403.74/71,918.48
  6. Step 6: Final answer
    x = 55,316.61

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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.