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Finding the Fourth Proportional to 71,352.90, 98,463.60 and 41,139.90

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Solution

The fourth proportional to 71,352.90, 98,463.60 and 41,139.90 is: 56,771.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,352.90 : 98,463.60 = 41,139.90 : x
  2. Step 2: Convert to fraction form
    71,352.90/98,463.60 = 41,139.90/x
  3. Step 3: Cross multiply
    71,352.90x = 98,463.60 × 41,139.90
  4. Step 4: Simplify right side
    71,352.90x = 4,050,782,657.64
  5. Step 5: Solve for x
    x = 4,050,782,657.64/71,352.90
  6. Step 6: Final answer
    x = 56,771.10

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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.