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Finding the Fourth Proportional to 71,662.20, 98,893.35 and 39,832.98

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Solution

The fourth proportional to 71,662.20, 98,893.35 and 39,832.98 is: 54,969.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,662.20 : 98,893.35 = 39,832.98 : x
  2. Step 2: Convert to fraction form
    71,662.20/98,893.35 = 39,832.98/x
  3. Step 3: Cross multiply
    71,662.20x = 98,893.35 × 39,832.98
  4. Step 4: Simplify right side
    71,662.20x = 3,939,216,832.68
  5. Step 5: Solve for x
    x = 3,939,216,832.68/71,662.20
  6. Step 6: Final answer
    x = 54,969.24

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1.5x scale

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.