Home / 80,919.43-121,442.70-56,133.89

Finding the Fourth Proportional to 80,919.43, 121,442.70 and 56,133.89

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Solution

The fourth proportional to 80,919.43, 121,442.70 and 56,133.89 is: 84,244.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919.43 : 121,442.70 = 56,133.89 : x
  2. Step 2: Convert to fraction form
    80,919.43/121,442.70 = 56,133.89/x
  3. Step 3: Cross multiply
    80,919.43x = 121,442.70 × 56,133.89
  4. Step 4: Simplify right side
    80,919.43x = 6,817,051,163.10
  5. Step 5: Solve for x
    x = 6,817,051,163.10/80,919.43
  6. Step 6: Final answer
    x = 84,244.93

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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.