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Finding the Fourth Proportional to 85,459.50, 117,936.48 and 47,221.52

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Solution

The fourth proportional to 85,459.50, 117,936.48 and 47,221.52 is: 65,167.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,459.50 : 117,936.48 = 47,221.52 : x
  2. Step 2: Convert to fraction form
    85,459.50/117,936.48 = 47,221.52/x
  3. Step 3: Cross multiply
    85,459.50x = 117,936.48 × 47,221.52
  4. Step 4: Simplify right side
    85,459.50x = 5,569,139,849.05
  5. Step 5: Solve for x
    x = 5,569,139,849.05/85,459.50
  6. Step 6: Final answer
    x = 65,167.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.