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Finding the Fourth Proportional to 85,957.82, 128,936.60 and 32,649.68

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Solution

The fourth proportional to 85,957.82, 128,936.60 and 32,649.68 is: 48,974.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,957.82 : 128,936.60 = 32,649.68 : x
  2. Step 2: Convert to fraction form
    85,957.82/128,936.60 = 32,649.68/x
  3. Step 3: Cross multiply
    85,957.82x = 128,936.60 × 32,649.68
  4. Step 4: Simplify right side
    85,957.82x = 4,209,738,730.29
  5. Step 5: Solve for x
    x = 4,209,738,730.29/85,957.82
  6. Step 6: Final answer
    x = 48,974.47

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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.