Home / 83,785.22-125,638.23-30,440.00

Finding the Fourth Proportional to 83,785.22, 125,638.23 and 30,440.00

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Solution

The fourth proportional to 83,785.22, 125,638.23 and 30,440.00 is: 45,645.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,785.22 : 125,638.23 = 30,440.00 : x
  2. Step 2: Convert to fraction form
    83,785.22/125,638.23 = 30,440.00/x
  3. Step 3: Cross multiply
    83,785.22x = 125,638.23 × 30,440.00
  4. Step 4: Simplify right side
    83,785.22x = 3,824,428,149.45
  5. Step 5: Solve for x
    x = 3,824,428,149.45/83,785.22
  6. Step 6: Final answer
    x = 45,645.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.