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Finding the Fourth Proportional to 67,470.31, 101,205.81 and 28,027.47

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Solution

The fourth proportional to 67,470.31, 101,205.81 and 28,027.47 is: 42,041.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,470.31 : 101,205.81 = 28,027.47 : x
  2. Step 2: Convert to fraction form
    67,470.31/101,205.81 = 28,027.47/x
  3. Step 3: Cross multiply
    67,470.31x = 101,205.81 × 28,027.47
  4. Step 4: Simplify right side
    67,470.31x = 2,836,542,803.60
  5. Step 5: Solve for x
    x = 2,836,542,803.60/67,470.31
  6. Step 6: Final answer
    x = 42,041.35

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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.