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Finding the Fourth Proportional to 85,274.64, 117,687.60 and 49,472.64

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Solution

The fourth proportional to 85,274.64, 117,687.60 and 49,472.64 is: 68,277.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,274.64 : 117,687.60 = 49,472.64 : x
  2. Step 2: Convert to fraction form
    85,274.64/117,687.60 = 49,472.64/x
  3. Step 3: Cross multiply
    85,274.64x = 117,687.60 × 49,472.64
  4. Step 4: Simplify right side
    85,274.64x = 5,822,316,267.26
  5. Step 5: Solve for x
    x = 5,822,316,267.26/85,274.64
  6. Step 6: Final answer
    x = 68,277.23

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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.