Home / 81,392-112,324.58-45,581.24

Finding the Fourth Proportional to 81,392, 112,324.58 and 45,581.24

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Solution

The fourth proportional to 81,392, 112,324.58 and 45,581.24 is: 62,904.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,392 : 112,324.58 = 45,581.24 : x
  2. Step 2: Convert to fraction form
    81,392/112,324.58 = 45,581.24/x
  3. Step 3: Cross multiply
    81,392x = 112,324.58 × 45,581.24
  4. Step 4: Simplify right side
    81,392x = 5,119,893,638.88
  5. Step 5: Solve for x
    x = 5,119,893,638.88/81,392
  6. Step 6: Final answer
    x = 62,904.14

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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.