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Finding the Fourth Proportional to 61,991.73, 85,538.03 and 35,128.69

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Solution

The fourth proportional to 61,991.73, 85,538.03 and 35,128.69 is: 48,471.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,991.73 : 85,538.03 = 35,128.69 : x
  2. Step 2: Convert to fraction form
    61,991.73/85,538.03 = 35,128.69/x
  3. Step 3: Cross multiply
    61,991.73x = 85,538.03 × 35,128.69
  4. Step 4: Simplify right side
    61,991.73x = 3,004,838,549.59
  5. Step 5: Solve for x
    x = 3,004,838,549.59/61,991.73
  6. Step 6: Final answer
    x = 48,471.60

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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.