Home / 78,327.20-108,147.72-48,153

Finding the Fourth Proportional to 78,327.20, 108,147.72 and 48,153

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Solution

The fourth proportional to 78,327.20, 108,147.72 and 48,153 is: 66,485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,327.20 : 108,147.72 = 48,153 : x
  2. Step 2: Convert to fraction form
    78,327.20/108,147.72 = 48,153/x
  3. Step 3: Cross multiply
    78,327.20x = 108,147.72 × 48,153
  4. Step 4: Simplify right side
    78,327.20x = 5,207,637,161.16
  5. Step 5: Solve for x
    x = 5,207,637,161.16/78,327.20
  6. Step 6: Final answer
    x = 66,485.68

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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.