Home / 78,520.15-117,770.46-25,207.92

Finding the Fourth Proportional to 78,520.15, 117,770.46 and 25,207.92

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Solution

The fourth proportional to 78,520.15, 117,770.46 and 25,207.92 is: 37,808.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.15 : 117,770.46 = 25,207.92 : x
  2. Step 2: Convert to fraction form
    78,520.15/117,770.46 = 25,207.92/x
  3. Step 3: Cross multiply
    78,520.15x = 117,770.46 × 25,207.92
  4. Step 4: Simplify right side
    78,520.15x = 2,968,748,334.04
  5. Step 5: Solve for x
    x = 2,968,748,334.04/78,520.15
  6. Step 6: Final answer
    x = 37,808.75

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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.