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Finding the Fourth Proportional to 78,311.67, 117,469.52 and 25,003.60

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Solution

The fourth proportional to 78,311.67, 117,469.52 and 25,003.60 is: 37,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,311.67 : 117,469.52 = 25,003.60 : x
  2. Step 2: Convert to fraction form
    78,311.67/117,469.52 = 25,003.60/x
  3. Step 3: Cross multiply
    78,311.67x = 117,469.52 × 25,003.60
  4. Step 4: Simplify right side
    78,311.67x = 2,937,160,565.34
  5. Step 5: Solve for x
    x = 2,937,160,565.34/78,311.67
  6. Step 6: Final answer
    x = 37,506.04

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1.5x scale

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.