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Finding the Fourth Proportional to 82,959.96, 124,440.40 and 20,630.46

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Solution

The fourth proportional to 82,959.96, 124,440.40 and 20,630.46 is: 30,945.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,959.96 : 124,440.40 = 20,630.46 : x
  2. Step 2: Convert to fraction form
    82,959.96/124,440.40 = 20,630.46/x
  3. Step 3: Cross multiply
    82,959.96x = 124,440.40 × 20,630.46
  4. Step 4: Simplify right side
    82,959.96x = 2,567,262,694.58
  5. Step 5: Solve for x
    x = 2,567,262,694.58/82,959.96
  6. Step 6: Final answer
    x = 30,945.80

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1.5x scale

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.