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Finding the Fourth Proportional to 79,055.64, 118,393.44 and 45,219.12

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Solution

The fourth proportional to 79,055.64, 118,393.44 and 45,219.12 is: 67,719.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,055.64 : 118,393.44 = 45,219.12 : x
  2. Step 2: Convert to fraction form
    79,055.64/118,393.44 = 45,219.12/x
  3. Step 3: Cross multiply
    79,055.64x = 118,393.44 × 45,219.12
  4. Step 4: Simplify right side
    79,055.64x = 5,353,647,170.57
  5. Step 5: Solve for x
    x = 5,353,647,170.57/79,055.64
  6. Step 6: Final answer
    x = 67,719.99

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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.