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Finding the Fourth Proportional to 71,138.87, 98,217.41 and 45,656.22

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Solution

The fourth proportional to 71,138.87, 98,217.41 and 45,656.22 is: 63,034.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,138.87 : 98,217.41 = 45,656.22 : x
  2. Step 2: Convert to fraction form
    71,138.87/98,217.41 = 45,656.22/x
  3. Step 3: Cross multiply
    71,138.87x = 98,217.41 × 45,656.22
  4. Step 4: Simplify right side
    71,138.87x = 4,484,236,075.64
  5. Step 5: Solve for x
    x = 4,484,236,075.64/71,138.87
  6. Step 6: Final answer
    x = 63,034.96

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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.