Home / 80,292.36-120,513.24-40,878.96

Finding the Fourth Proportional to 80,292.36, 120,513.24 and 40,878.96

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Solution

The fourth proportional to 80,292.36, 120,513.24 and 40,878.96 is: 61,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,292.36 : 120,513.24 = 40,878.96 : x
  2. Step 2: Convert to fraction form
    80,292.36/120,513.24 = 40,878.96/x
  3. Step 3: Cross multiply
    80,292.36x = 120,513.24 × 40,878.96
  4. Step 4: Simplify right side
    80,292.36x = 4,926,455,917.43
  5. Step 5: Solve for x
    x = 4,926,455,917.43/80,292.36
  6. Step 6: Final answer
    x = 61,356.47

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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.