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Finding the Fourth Proportional to 103,472.40, 155,208.60 and 36,987.60

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Solution

The fourth proportional to 103,472.40, 155,208.60 and 36,987.60 is: 55,481.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,472.40 : 155,208.60 = 36,987.60 : x
  2. Step 2: Convert to fraction form
    103,472.40/155,208.60 = 36,987.60/x
  3. Step 3: Cross multiply
    103,472.40x = 155,208.60 × 36,987.60
  4. Step 4: Simplify right side
    103,472.40x = 5,740,793,613.36
  5. Step 5: Solve for x
    x = 5,740,793,613.36/103,472.40
  6. Step 6: Final answer
    x = 55,481.40

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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.