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Finding the Fourth Proportional to 85,822.44, 128,525.80 and 43,591.44

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Solution

The fourth proportional to 85,822.44, 128,525.80 and 43,591.44 is: 65,281.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,822.44 : 128,525.80 = 43,591.44 : x
  2. Step 2: Convert to fraction form
    85,822.44/128,525.80 = 43,591.44/x
  3. Step 3: Cross multiply
    85,822.44x = 128,525.80 × 43,591.44
  4. Step 4: Simplify right side
    85,822.44x = 5,602,624,699.15
  5. Step 5: Solve for x
    x = 5,602,624,699.15/85,822.44
  6. Step 6: Final answer
    x = 65,281.58

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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.