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Finding the Fourth Proportional to 103,630.58, 155,422.65 and 40,452.20

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Solution

The fourth proportional to 103,630.58, 155,422.65 and 40,452.20 is: 60,669.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.58 : 155,422.65 = 40,452.20 : x
  2. Step 2: Convert to fraction form
    103,630.58/155,422.65 = 40,452.20/x
  3. Step 3: Cross multiply
    103,630.58x = 155,422.65 × 40,452.20
  4. Step 4: Simplify right side
    103,630.58x = 6,287,188,122.33
  5. Step 5: Solve for x
    x = 6,287,188,122.33/103,630.58
  6. Step 6: Final answer
    x = 60,669.24

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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.