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Finding the Fourth Proportional to 85,222.95, 127,822.59 and 45,224.43

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Solution

The fourth proportional to 85,222.95, 127,822.59 and 45,224.43 is: 67,830.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,222.95 : 127,822.59 = 45,224.43 : x
  2. Step 2: Convert to fraction form
    85,222.95/127,822.59 = 45,224.43/x
  3. Step 3: Cross multiply
    85,222.95x = 127,822.59 × 45,224.43
  4. Step 4: Simplify right side
    85,222.95x = 5,780,703,773.87
  5. Step 5: Solve for x
    x = 5,780,703,773.87/85,222.95
  6. Step 6: Final answer
    x = 67,830.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.