Home / 84,331.49-126,515.45-31,740.82

Finding the Fourth Proportional to 84,331.49, 126,515.45 and 31,740.82

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Solution

The fourth proportional to 84,331.49, 126,515.45 and 31,740.82 is: 47,618.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,331.49 : 126,515.45 = 31,740.82 : x
  2. Step 2: Convert to fraction form
    84,331.49/126,515.45 = 31,740.82/x
  3. Step 3: Cross multiply
    84,331.49x = 126,515.45 × 31,740.82
  4. Step 4: Simplify right side
    84,331.49x = 4,015,703,888.73
  5. Step 5: Solve for x
    x = 4,015,703,888.73/84,331.49
  6. Step 6: Final answer
    x = 47,618.09

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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.