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Finding the Fourth Proportional to 77,404.79, 116,107.29 and 21,245.67

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Solution

The fourth proportional to 77,404.79, 116,107.29 and 21,245.67 is: 31,868.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,404.79 : 116,107.29 = 21,245.67 : x
  2. Step 2: Convert to fraction form
    77,404.79/116,107.29 = 21,245.67/x
  3. Step 3: Cross multiply
    77,404.79x = 116,107.29 × 21,245.67
  4. Step 4: Simplify right side
    77,404.79x = 2,466,777,167.93
  5. Step 5: Solve for x
    x = 2,466,777,167.93/77,404.79
  6. Step 6: Final answer
    x = 31,868.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.