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Finding the Fourth Proportional to 85,109.64, 127,579.98 and 43,463.56

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Solution

The fourth proportional to 85,109.64, 127,579.98 and 43,463.56 is: 65,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,109.64 : 127,579.98 = 43,463.56 : x
  2. Step 2: Convert to fraction form
    85,109.64/127,579.98 = 43,463.56/x
  3. Step 3: Cross multiply
    85,109.64x = 127,579.98 × 43,463.56
  4. Step 4: Simplify right side
    85,109.64x = 5,545,080,115.53
  5. Step 5: Solve for x
    x = 5,545,080,115.53/85,109.64
  6. Step 6: Final answer
    x = 65,152.20

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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.