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Finding the Fourth Proportional to 71,795.80, 99,077.34 and 41,987.80

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Solution

The fourth proportional to 71,795.80, 99,077.34 and 41,987.80 is: 57,942.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,795.80 : 99,077.34 = 41,987.80 : x
  2. Step 2: Convert to fraction form
    71,795.80/99,077.34 = 41,987.80/x
  3. Step 3: Cross multiply
    71,795.80x = 99,077.34 × 41,987.80
  4. Step 4: Simplify right side
    71,795.80x = 4,160,039,536.45
  5. Step 5: Solve for x
    x = 4,160,039,536.45/71,795.80
  6. Step 6: Final answer
    x = 57,942.66

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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.