Home / 80,983.68-121,484.16-34,241.28

Finding the Fourth Proportional to 80,983.68, 121,484.16 and 34,241.28

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Solution

The fourth proportional to 80,983.68, 121,484.16 and 34,241.28 is: 51,365.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,983.68 : 121,484.16 = 34,241.28 : x
  2. Step 2: Convert to fraction form
    80,983.68/121,484.16 = 34,241.28/x
  3. Step 3: Cross multiply
    80,983.68x = 121,484.16 × 34,241.28
  4. Step 4: Simplify right side
    80,983.68x = 4,159,773,138.12
  5. Step 5: Solve for x
    x = 4,159,773,138.12/80,983.68
  6. Step 6: Final answer
    x = 51,365.57

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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.