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Finding the Fourth Proportional to 79,079.60, 118,446.60 and 61,410.80

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Solution

The fourth proportional to 79,079.60, 118,446.60 and 61,410.80 is: 91,982.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,079.60 : 118,446.60 = 61,410.80 : x
  2. Step 2: Convert to fraction form
    79,079.60/118,446.60 = 61,410.80/x
  3. Step 3: Cross multiply
    79,079.60x = 118,446.60 × 61,410.80
  4. Step 4: Simplify right side
    79,079.60x = 7,273,900,463.28
  5. Step 5: Solve for x
    x = 7,273,900,463.28/79,079.60
  6. Step 6: Final answer
    x = 91,982.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.