Home / 90,628.47-135,957.29-31,481.06

Finding the Fourth Proportional to 90,628.47, 135,957.29 and 31,481.06

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Solution

The fourth proportional to 90,628.47, 135,957.29 and 31,481.06 is: 47,226.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,628.47 : 135,957.29 = 31,481.06 : x
  2. Step 2: Convert to fraction form
    90,628.47/135,957.29 = 31,481.06/x
  3. Step 3: Cross multiply
    90,628.47x = 135,957.29 × 31,481.06
  4. Step 4: Simplify right side
    90,628.47x = 4,280,078,766.74
  5. Step 5: Solve for x
    x = 4,280,078,766.74/90,628.47
  6. Step 6: Final answer
    x = 47,226.65

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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.