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Finding the Fourth Proportional to 91,372.26, 136,965.03 and 51,845.88

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Solution

The fourth proportional to 91,372.26, 136,965.03 and 51,845.88 is: 77,715.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,372.26 : 136,965.03 = 51,845.88 : x
  2. Step 2: Convert to fraction form
    91,372.26/136,965.03 = 51,845.88/x
  3. Step 3: Cross multiply
    91,372.26x = 136,965.03 × 51,845.88
  4. Step 4: Simplify right side
    91,372.26x = 7,101,072,509.58
  5. Step 5: Solve for x
    x = 7,101,072,509.58/91,372.26
  6. Step 6: Final answer
    x = 77,715.85

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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.