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Finding the Fourth Proportional to 91,101.34, 136,523.54 and 43,018.64

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Solution

The fourth proportional to 91,101.34, 136,523.54 and 43,018.64 is: 64,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,101.34 : 136,523.54 = 43,018.64 : x
  2. Step 2: Convert to fraction form
    91,101.34/136,523.54 = 43,018.64/x
  3. Step 3: Cross multiply
    91,101.34x = 136,523.54 × 43,018.64
  4. Step 4: Simplify right side
    91,101.34x = 5,873,056,955.68
  5. Step 5: Solve for x
    x = 5,873,056,955.68/91,101.34
  6. Step 6: Final answer
    x = 64,467.29

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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.