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Finding the Fourth Proportional to 45,104.42, 67,656.60 and 28,489.70

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Solution

The fourth proportional to 45,104.42, 67,656.60 and 28,489.70 is: 42,734.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,104.42 : 67,656.60 = 28,489.70 : x
  2. Step 2: Convert to fraction form
    45,104.42/67,656.60 = 28,489.70/x
  3. Step 3: Cross multiply
    45,104.42x = 67,656.60 × 28,489.70
  4. Step 4: Simplify right side
    45,104.42x = 1,927,516,237.02
  5. Step 5: Solve for x
    x = 1,927,516,237.02/45,104.42
  6. Step 6: Final answer
    x = 42,734.53

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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.