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Finding the Fourth Proportional to 79,235.60, 109,373.64 and 54,067.28

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Solution

The fourth proportional to 79,235.60, 109,373.64 and 54,067.28 is: 74,632.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,235.60 : 109,373.64 = 54,067.28 : x
  2. Step 2: Convert to fraction form
    79,235.60/109,373.64 = 54,067.28/x
  3. Step 3: Cross multiply
    79,235.60x = 109,373.64 × 54,067.28
  4. Step 4: Simplify right side
    79,235.60x = 5,913,535,218.50
  5. Step 5: Solve for x
    x = 5,913,535,218.50/79,235.60
  6. Step 6: Final answer
    x = 74,632.30

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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.