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Finding the Fourth Proportional to 79,299.89, 109,435.34 and 43,487.76

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Solution

The fourth proportional to 79,299.89, 109,435.34 and 43,487.76 is: 60,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,299.89 : 109,435.34 = 43,487.76 : x
  2. Step 2: Convert to fraction form
    79,299.89/109,435.34 = 43,487.76/x
  3. Step 3: Cross multiply
    79,299.89x = 109,435.34 × 43,487.76
  4. Step 4: Simplify right side
    79,299.89x = 4,759,097,801.44
  5. Step 5: Solve for x
    x = 4,759,097,801.44/79,299.89
  6. Step 6: Final answer
    x = 60,013.93

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1.5x scale

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.