Home / 84,385.94-126,553.38-28,211.63

Finding the Fourth Proportional to 84,385.94, 126,553.38 and 28,211.63

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Solution

The fourth proportional to 84,385.94, 126,553.38 and 28,211.63 is: 42,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,385.94 : 126,553.38 = 28,211.63 : x
  2. Step 2: Convert to fraction form
    84,385.94/126,553.38 = 28,211.63/x
  3. Step 3: Cross multiply
    84,385.94x = 126,553.38 × 28,211.63
  4. Step 4: Simplify right side
    84,385.94x = 3,570,277,131.81
  5. Step 5: Solve for x
    x = 3,570,277,131.81/84,385.94
  6. Step 6: Final answer
    x = 42,308.91

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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.