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Finding the Fourth Proportional to 71,201.60, 98,262.84 and 40,990.64

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Solution

The fourth proportional to 71,201.60, 98,262.84 and 40,990.64 is: 56,569.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,201.60 : 98,262.84 = 40,990.64 : x
  2. Step 2: Convert to fraction form
    71,201.60/98,262.84 = 40,990.64/x
  3. Step 3: Cross multiply
    71,201.60x = 98,262.84 × 40,990.64
  4. Step 4: Simplify right side
    71,201.60x = 4,027,856,699.82
  5. Step 5: Solve for x
    x = 4,027,856,699.82/71,201.60
  6. Step 6: Final answer
    x = 56,569.75

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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.