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Finding the Fourth Proportional to 68,216.63, 102,335.88 and 28,779.55

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Solution

The fourth proportional to 68,216.63, 102,335.88 and 28,779.55 is: 43,173.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,216.63 : 102,335.88 = 28,779.55 : x
  2. Step 2: Convert to fraction form
    68,216.63/102,335.88 = 28,779.55/x
  3. Step 3: Cross multiply
    68,216.63x = 102,335.88 × 28,779.55
  4. Step 4: Simplify right side
    68,216.63x = 2,945,180,503.31
  5. Step 5: Solve for x
    x = 2,945,180,503.31/68,216.63
  6. Step 6: Final answer
    x = 43,173.94

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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.