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Finding the Fourth Proportional to 91,207.91, 136,777.01 and 43,809.82

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Solution

The fourth proportional to 91,207.91, 136,777.01 and 43,809.82 is: 65,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,207.91 : 136,777.01 = 43,809.82 : x
  2. Step 2: Convert to fraction form
    91,207.91/136,777.01 = 43,809.82/x
  3. Step 3: Cross multiply
    91,207.91x = 136,777.01 × 43,809.82
  4. Step 4: Simplify right side
    91,207.91x = 5,992,175,627.25
  5. Step 5: Solve for x
    x = 5,992,175,627.25/91,207.91
  6. Step 6: Final answer
    x = 65,697.98

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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.