Home / 83,388.48-115,082.16-47,579.28

Finding the Fourth Proportional to 83,388.48, 115,082.16 and 47,579.28

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Solution

The fourth proportional to 83,388.48, 115,082.16 and 47,579.28 is: 65,662.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,388.48 : 115,082.16 = 47,579.28 : x
  2. Step 2: Convert to fraction form
    83,388.48/115,082.16 = 47,579.28/x
  3. Step 3: Cross multiply
    83,388.48x = 115,082.16 × 47,579.28
  4. Step 4: Simplify right side
    83,388.48x = 5,475,526,313.64
  5. Step 5: Solve for x
    x = 5,475,526,313.64/83,388.48
  6. Step 6: Final answer
    x = 65,662.86

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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.