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Finding the Fourth Proportional to 71,285.77, 98,373.17 and 39,453.98

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Solution

The fourth proportional to 71,285.77, 98,373.17 and 39,453.98 is: 54,445.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,285.77 : 98,373.17 = 39,453.98 : x
  2. Step 2: Convert to fraction form
    71,285.77/98,373.17 = 39,453.98/x
  3. Step 3: Cross multiply
    71,285.77x = 98,373.17 × 39,453.98
  4. Step 4: Simplify right side
    71,285.77x = 3,881,212,884.45
  5. Step 5: Solve for x
    x = 3,881,212,884.45/71,285.77
  6. Step 6: Final answer
    x = 54,445.83

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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.