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Finding the Fourth Proportional to 67,739.63, 101,609.51 and 28,275.21

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Solution

The fourth proportional to 67,739.63, 101,609.51 and 28,275.21 is: 42,412.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,739.63 : 101,609.51 = 28,275.21 : x
  2. Step 2: Convert to fraction form
    67,739.63/101,609.51 = 28,275.21/x
  3. Step 3: Cross multiply
    67,739.63x = 101,609.51 × 28,275.21
  4. Step 4: Simplify right side
    67,739.63x = 2,873,030,091.87
  5. Step 5: Solve for x
    x = 2,873,030,091.87/67,739.63
  6. Step 6: Final answer
    x = 42,412.84

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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.