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Finding the Fourth Proportional to 85,994.66, 128,941.88 and 33,342.64

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Solution

The fourth proportional to 85,994.66, 128,941.88 and 33,342.64 is: 49,994.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,994.66 : 128,941.88 = 33,342.64 : x
  2. Step 2: Convert to fraction form
    85,994.66/128,941.88 = 33,342.64/x
  3. Step 3: Cross multiply
    85,994.66x = 128,941.88 × 33,342.64
  4. Step 4: Simplify right side
    85,994.66x = 4,299,262,196.70
  5. Step 5: Solve for x
    x = 4,299,262,196.70/85,994.66
  6. Step 6: Final answer
    x = 49,994.52

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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.