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Finding the Fourth Proportional to 71,400.60, 98,409.84 and 47,484.54

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Solution

The fourth proportional to 71,400.60, 98,409.84 and 47,484.54 is: 65,446.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,400.60 : 98,409.84 = 47,484.54 : x
  2. Step 2: Convert to fraction form
    71,400.60/98,409.84 = 47,484.54/x
  3. Step 3: Cross multiply
    71,400.60x = 98,409.84 × 47,484.54
  4. Step 4: Simplify right side
    71,400.60x = 4,672,945,983.87
  5. Step 5: Solve for x
    x = 4,672,945,983.87/71,400.60
  6. Step 6: Final answer
    x = 65,446.87

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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.