Home / 84,283.21-126,429.68-31,693.15

Finding the Fourth Proportional to 84,283.21, 126,429.68 and 31,693.15

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Solution

The fourth proportional to 84,283.21, 126,429.68 and 31,693.15 is: 47,541.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,283.21 : 126,429.68 = 31,693.15 : x
  2. Step 2: Convert to fraction form
    84,283.21/126,429.68 = 31,693.15/x
  3. Step 3: Cross multiply
    84,283.21x = 126,429.68 × 31,693.15
  4. Step 4: Simplify right side
    84,283.21x = 4,006,954,812.69
  5. Step 5: Solve for x
    x = 4,006,954,812.69/84,283.21
  6. Step 6: Final answer
    x = 47,541.55

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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.