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Finding the Fourth Proportional to 66,363.80, 99,311.81 and 41,415.57

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Solution

The fourth proportional to 66,363.80, 99,311.81 and 41,415.57 is: 61,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,363.80 : 99,311.81 = 41,415.57 : x
  2. Step 2: Convert to fraction form
    66,363.80/99,311.81 = 41,415.57/x
  3. Step 3: Cross multiply
    66,363.80x = 99,311.81 × 41,415.57
  4. Step 4: Simplify right side
    66,363.80x = 4,113,055,011.80
  5. Step 5: Solve for x
    x = 4,113,055,011.80/66,363.80
  6. Step 6: Final answer
    x = 61,977.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.