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Finding the Fourth Proportional to 79,453.60, 109,639.44 and 43,641.76

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Solution

The fourth proportional to 79,453.60, 109,639.44 and 43,641.76 is: 60,222.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,453.60 : 109,639.44 = 43,641.76 : x
  2. Step 2: Convert to fraction form
    79,453.60/109,639.44 = 43,641.76/x
  3. Step 3: Cross multiply
    79,453.60x = 109,639.44 × 43,641.76
  4. Step 4: Simplify right side
    79,453.60x = 4,784,858,127.01
  5. Step 5: Solve for x
    x = 4,784,858,127.01/79,453.60
  6. Step 6: Final answer
    x = 60,222.04

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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.