Home / 84,087.84-126,169.96-31,501.28

Finding the Fourth Proportional to 84,087.84, 126,169.96 and 31,501.28

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Solution

The fourth proportional to 84,087.84, 126,169.96 and 31,501.28 is: 47,266.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,087.84 : 126,169.96 = 31,501.28 : x
  2. Step 2: Convert to fraction form
    84,087.84/126,169.96 = 31,501.28/x
  3. Step 3: Cross multiply
    84,087.84x = 126,169.96 × 31,501.28
  4. Step 4: Simplify right side
    84,087.84x = 3,974,515,237.55
  5. Step 5: Solve for x
    x = 3,974,515,237.55/84,087.84
  6. Step 6: Final answer
    x = 47,266.23

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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.