Home / 81,719.10-112,771.68-45,908.35

Finding the Fourth Proportional to 81,719.10, 112,771.68 and 45,908.35

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Solution

The fourth proportional to 81,719.10, 112,771.68 and 45,908.35 is: 63,353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,719.10 : 112,771.68 = 45,908.35 : x
  2. Step 2: Convert to fraction form
    81,719.10/112,771.68 = 45,908.35/x
  3. Step 3: Cross multiply
    81,719.10x = 112,771.68 × 45,908.35
  4. Step 4: Simplify right side
    81,719.10x = 5,177,161,755.53
  5. Step 5: Solve for x
    x = 5,177,161,755.53/81,719.10
  6. Step 6: Final answer
    x = 63,353.14

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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.