Home / 80,976.36-121,429.24-43,017.36

Finding the Fourth Proportional to 80,976.36, 121,429.24 and 43,017.36

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Solution

The fourth proportional to 80,976.36, 121,429.24 and 43,017.36 is: 64,507.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,976.36 : 121,429.24 = 43,017.36 : x
  2. Step 2: Convert to fraction form
    80,976.36/121,429.24 = 43,017.36/x
  3. Step 3: Cross multiply
    80,976.36x = 121,429.24 × 43,017.36
  4. Step 4: Simplify right side
    80,976.36x = 5,223,565,331.61
  5. Step 5: Solve for x
    x = 5,223,565,331.61/80,976.36
  6. Step 6: Final answer
    x = 64,507.29

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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.