Home / 81,181.17-112,029.75-45,371.21

Finding the Fourth Proportional to 81,181.17, 112,029.75 and 45,371.21

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Solution

The fourth proportional to 81,181.17, 112,029.75 and 45,371.21 is: 62,612.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,181.17 : 112,029.75 = 45,371.21 : x
  2. Step 2: Convert to fraction form
    81,181.17/112,029.75 = 45,371.21/x
  3. Step 3: Cross multiply
    81,181.17x = 112,029.75 × 45,371.21
  4. Step 4: Simplify right side
    81,181.17x = 5,082,924,753.35
  5. Step 5: Solve for x
    x = 5,082,924,753.35/81,181.17
  6. Step 6: Final answer
    x = 62,612.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.