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Finding the Fourth Proportional to 71,124, 98,150.74 and 39,292.89

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Solution

The fourth proportional to 71,124, 98,150.74 and 39,292.89 is: 54,223.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,124 : 98,150.74 = 39,292.89 : x
  2. Step 2: Convert to fraction form
    71,124/98,150.74 = 39,292.89/x
  3. Step 3: Cross multiply
    71,124x = 98,150.74 × 39,292.89
  4. Step 4: Simplify right side
    71,124x = 3,856,626,230.24
  5. Step 5: Solve for x
    x = 3,856,626,230.24/71,124
  6. Step 6: Final answer
    x = 54,223.98

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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.