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Finding the Fourth Proportional to 81,295.94, 112,188.84 and 45,486.02

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Solution

The fourth proportional to 81,295.94, 112,188.84 and 45,486.02 is: 62,770.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,295.94 : 112,188.84 = 45,486.02 : x
  2. Step 2: Convert to fraction form
    81,295.94/112,188.84 = 45,486.02/x
  3. Step 3: Cross multiply
    81,295.94x = 112,188.84 × 45,486.02
  4. Step 4: Simplify right side
    81,295.94x = 5,103,023,820.02
  5. Step 5: Solve for x
    x = 5,103,023,820.02/81,295.94
  6. Step 6: Final answer
    x = 62,770.96

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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.