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Finding the Fourth Proportional to 71,859.78, 99,167.53 and 41,237.87

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Solution

The fourth proportional to 71,859.78, 99,167.53 and 41,237.87 is: 56,908.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,859.78 : 99,167.53 = 41,237.87 : x
  2. Step 2: Convert to fraction form
    71,859.78/99,167.53 = 41,237.87/x
  3. Step 3: Cross multiply
    71,859.78x = 99,167.53 × 41,237.87
  4. Step 4: Simplify right side
    71,859.78x = 4,089,457,111.43
  5. Step 5: Solve for x
    x = 4,089,457,111.43/71,859.78
  6. Step 6: Final answer
    x = 56,908.85

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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.