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Finding the Fourth Proportional to 71,711.21, 99,002.01 and 54,580.93

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Solution

The fourth proportional to 71,711.21, 99,002.01 and 54,580.93 is: 75,352.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,711.21 : 99,002.01 = 54,580.93 : x
  2. Step 2: Convert to fraction form
    71,711.21/99,002.01 = 54,580.93/x
  3. Step 3: Cross multiply
    71,711.21x = 99,002.01 × 54,580.93
  4. Step 4: Simplify right side
    71,711.21x = 5,403,621,777.67
  5. Step 5: Solve for x
    x = 5,403,621,777.67/71,711.21
  6. Step 6: Final answer
    x = 75,352.54

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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.