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Finding the Fourth Proportional to 103,479.60, 142,793.96 and 58,149.02

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Solution

The fourth proportional to 103,479.60, 142,793.96 and 58,149.02 is: 80,241.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,479.60 : 142,793.96 = 58,149.02 : x
  2. Step 2: Convert to fraction form
    103,479.60/142,793.96 = 58,149.02/x
  3. Step 3: Cross multiply
    103,479.60x = 142,793.96 × 58,149.02
  4. Step 4: Simplify right side
    103,479.60x = 8,303,328,835.92
  5. Step 5: Solve for x
    x = 8,303,328,835.92/103,479.60
  6. Step 6: Final answer
    x = 80,241.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.