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Finding the Fourth Proportional to 81,294.94, 112,187.46 and 45,485.02

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Solution

The fourth proportional to 81,294.94, 112,187.46 and 45,485.02 is: 62,769.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,294.94 : 112,187.46 = 45,485.02 : x
  2. Step 2: Convert to fraction form
    81,294.94/112,187.46 = 45,485.02/x
  3. Step 3: Cross multiply
    81,294.94x = 112,187.46 × 45,485.02
  4. Step 4: Simplify right side
    81,294.94x = 5,102,848,861.85
  5. Step 5: Solve for x
    x = 5,102,848,861.85/81,294.94
  6. Step 6: Final answer
    x = 62,769.58

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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.