Home / 84,615.17-126,789.21-31,233.66

Finding the Fourth Proportional to 84,615.17, 126,789.21 and 31,233.66

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Solution

The fourth proportional to 84,615.17, 126,789.21 and 31,233.66 is: 46,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,615.17 : 126,789.21 = 31,233.66 : x
  2. Step 2: Convert to fraction form
    84,615.17/126,789.21 = 31,233.66/x
  3. Step 3: Cross multiply
    84,615.17x = 126,789.21 × 31,233.66
  4. Step 4: Simplify right side
    84,615.17x = 3,960,091,076.81
  5. Step 5: Solve for x
    x = 3,960,091,076.81/84,615.17
  6. Step 6: Final answer
    x = 46,801.20

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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.