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Finding the Fourth Proportional to 85,586.64, 118,101.96 and 49,278.39

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Solution

The fourth proportional to 85,586.64, 118,101.96 and 49,278.39 is: 67,999.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,586.64 : 118,101.96 = 49,278.39 : x
  2. Step 2: Convert to fraction form
    85,586.64/118,101.96 = 49,278.39/x
  3. Step 3: Cross multiply
    85,586.64x = 118,101.96 × 49,278.39
  4. Step 4: Simplify right side
    85,586.64x = 5,819,874,444.64
  5. Step 5: Solve for x
    x = 5,819,874,444.64/85,586.64
  6. Step 6: Final answer
    x = 67,999.80

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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.