Home / 80,857.29-121,298.91-34,117.05

Finding the Fourth Proportional to 80,857.29, 121,298.91 and 34,117.05

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Solution

The fourth proportional to 80,857.29, 121,298.91 and 34,117.05 is: 51,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,857.29 : 121,298.91 = 34,117.05 : x
  2. Step 2: Convert to fraction form
    80,857.29/121,298.91 = 34,117.05/x
  3. Step 3: Cross multiply
    80,857.29x = 121,298.91 × 34,117.05
  4. Step 4: Simplify right side
    80,857.29x = 4,138,360,977.42
  5. Step 5: Solve for x
    x = 4,138,360,977.42/80,857.29
  6. Step 6: Final answer
    x = 51,181.05

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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.