Home / 81,632.35-122,425.34-31,701.79

Finding the Fourth Proportional to 81,632.35, 122,425.34 and 31,701.79

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Solution

The fourth proportional to 81,632.35, 122,425.34 and 31,701.79 is: 47,543.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,632.35 : 122,425.34 = 31,701.79 : x
  2. Step 2: Convert to fraction form
    81,632.35/122,425.34 = 31,701.79/x
  3. Step 3: Cross multiply
    81,632.35x = 122,425.34 × 31,701.79
  4. Step 4: Simplify right side
    81,632.35x = 3,881,101,954.79
  5. Step 5: Solve for x
    x = 3,881,101,954.79/81,632.35
  6. Step 6: Final answer
    x = 47,543.68

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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.