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Finding the Fourth Proportional to 85,230.80, 117,610.08 and 47,501

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Solution

The fourth proportional to 85,230.80, 117,610.08 and 47,501 is: 65,546.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,230.80 : 117,610.08 = 47,501 : x
  2. Step 2: Convert to fraction form
    85,230.80/117,610.08 = 47,501/x
  3. Step 3: Cross multiply
    85,230.80x = 117,610.08 × 47,501
  4. Step 4: Simplify right side
    85,230.80x = 5,586,596,410.08
  5. Step 5: Solve for x
    x = 5,586,596,410.08/85,230.80
  6. Step 6: Final answer
    x = 65,546.69

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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.