Home / 81,178.83-112,028.05-45,371.16

Finding the Fourth Proportional to 81,178.83, 112,028.05 and 45,371.16

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Solution

The fourth proportional to 81,178.83, 112,028.05 and 45,371.16 is: 62,612.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,178.83 : 112,028.05 = 45,371.16 : x
  2. Step 2: Convert to fraction form
    81,178.83/112,028.05 = 45,371.16/x
  3. Step 3: Cross multiply
    81,178.83x = 112,028.05 × 45,371.16
  4. Step 4: Simplify right side
    81,178.83x = 5,082,842,020.90
  5. Step 5: Solve for x
    x = 5,082,842,020.90/81,178.83
  6. Step 6: Final answer
    x = 62,612.90

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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.