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Finding the Fourth Proportional to 59,845, 89,785.72 and 28,279.30

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Solution

The fourth proportional to 59,845, 89,785.72 and 28,279.30 is: 42,427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,845 : 89,785.72 = 28,279.30 : x
  2. Step 2: Convert to fraction form
    59,845/89,785.72 = 28,279.30/x
  3. Step 3: Cross multiply
    59,845x = 89,785.72 × 28,279.30
  4. Step 4: Simplify right side
    59,845x = 2,539,077,311.60
  5. Step 5: Solve for x
    x = 2,539,077,311.60/59,845
  6. Step 6: Final answer
    x = 42,427.56

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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.