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Finding the Fourth Proportional to 79,299.54, 109,434.87 and 43,487.40

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Solution

The fourth proportional to 79,299.54, 109,434.87 and 43,487.40 is: 60,013.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,299.54 : 109,434.87 = 43,487.40 : x
  2. Step 2: Convert to fraction form
    79,299.54/109,434.87 = 43,487.40/x
  3. Step 3: Cross multiply
    79,299.54x = 109,434.87 × 43,487.40
  4. Step 4: Simplify right side
    79,299.54x = 4,759,037,965.64
  5. Step 5: Solve for x
    x = 4,759,037,965.64/79,299.54
  6. Step 6: Final answer
    x = 60,013.44

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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.