Home / 81,478.43-112,229.91-57,563.58

Finding the Fourth Proportional to 81,478.43, 112,229.91 and 57,563.58

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Solution

The fourth proportional to 81,478.43, 112,229.91 and 57,563.58 is: 79,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,478.43 : 112,229.91 = 57,563.58 : x
  2. Step 2: Convert to fraction form
    81,478.43/112,229.91 = 57,563.58/x
  3. Step 3: Cross multiply
    81,478.43x = 112,229.91 × 57,563.58
  4. Step 4: Simplify right side
    81,478.43x = 6,460,355,402.68
  5. Step 5: Solve for x
    x = 6,460,355,402.68/81,478.43
  6. Step 6: Final answer
    x = 79,289.15

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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.