Home / 84,042.40-126,116.16-34,122.72

Finding the Fourth Proportional to 84,042.40, 126,116.16 and 34,122.72

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Solution

The fourth proportional to 84,042.40, 126,116.16 and 34,122.72 is: 51,205.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,042.40 : 126,116.16 = 34,122.72 : x
  2. Step 2: Convert to fraction form
    84,042.40/126,116.16 = 34,122.72/x
  3. Step 3: Cross multiply
    84,042.40x = 126,116.16 × 34,122.72
  4. Step 4: Simplify right side
    84,042.40x = 4,303,426,415.16
  5. Step 5: Solve for x
    x = 4,303,426,415.16/84,042.40
  6. Step 6: Final answer
    x = 51,205.42

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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.