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Finding the Fourth Proportional to 81,171.67, 112,027.50 and 45,369.13

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Solution

The fourth proportional to 81,171.67, 112,027.50 and 45,369.13 is: 62,615.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,171.67 : 112,027.50 = 45,369.13 : x
  2. Step 2: Convert to fraction form
    81,171.67/112,027.50 = 45,369.13/x
  3. Step 3: Cross multiply
    81,171.67x = 112,027.50 × 45,369.13
  4. Step 4: Simplify right side
    81,171.67x = 5,082,590,211.08
  5. Step 5: Solve for x
    x = 5,082,590,211.08/81,171.67
  6. Step 6: Final answer
    x = 62,615.32

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1.5x scale

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.