Home / 71,918.76-99,251.25-40,087.89

Finding the Fourth Proportional to 71,918.76, 99,251.25 and 40,087.89

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Solution

The fourth proportional to 71,918.76, 99,251.25 and 40,087.89 is: 55,323.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,918.76 : 99,251.25 = 40,087.89 : x
  2. Step 2: Convert to fraction form
    71,918.76/99,251.25 = 40,087.89/x
  3. Step 3: Cross multiply
    71,918.76x = 99,251.25 × 40,087.89
  4. Step 4: Simplify right side
    71,918.76x = 3,978,773,192.36
  5. Step 5: Solve for x
    x = 3,978,773,192.36/71,918.76
  6. Step 6: Final answer
    x = 55,323.16

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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.