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Finding the Fourth Proportional to 84,433.52, 126,656.88 and 28,273.84

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Solution

The fourth proportional to 84,433.52, 126,656.88 and 28,273.84 is: 42,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,433.52 : 126,656.88 = 28,273.84 : x
  2. Step 2: Convert to fraction form
    84,433.52/126,656.88 = 28,273.84/x
  3. Step 3: Cross multiply
    84,433.52x = 126,656.88 × 28,273.84
  4. Step 4: Simplify right side
    84,433.52x = 3,581,076,360.02
  5. Step 5: Solve for x
    x = 3,581,076,360.02/84,433.52
  6. Step 6: Final answer
    x = 42,412.97

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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.