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Finding the Fourth Proportional to 61,705.56, 85,074.12 and 50,363.40

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Solution

The fourth proportional to 61,705.56, 85,074.12 and 50,363.40 is: 69,436.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,705.56 : 85,074.12 = 50,363.40 : x
  2. Step 2: Convert to fraction form
    61,705.56/85,074.12 = 50,363.40/x
  3. Step 3: Cross multiply
    61,705.56x = 85,074.12 × 50,363.40
  4. Step 4: Simplify right side
    61,705.56x = 4,284,621,935.21
  5. Step 5: Solve for x
    x = 4,284,621,935.21/61,705.56
  6. Step 6: Final answer
    x = 69,436.56

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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.