Home / 80,459.85-120,643.05-53,836.32

Finding the Fourth Proportional to 80,459.85, 120,643.05 and 53,836.32

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Solution

The fourth proportional to 80,459.85, 120,643.05 and 53,836.32 is: 80,723.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,459.85 : 120,643.05 = 53,836.32 : x
  2. Step 2: Convert to fraction form
    80,459.85/120,643.05 = 53,836.32/x
  3. Step 3: Cross multiply
    80,459.85x = 120,643.05 × 53,836.32
  4. Step 4: Simplify right side
    80,459.85x = 6,494,977,845.58
  5. Step 5: Solve for x
    x = 6,494,977,845.58/80,459.85
  6. Step 6: Final answer
    x = 80,723.22

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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.