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Finding the Fourth Proportional to 103,536.60, 155,308.40 and 28,650.52

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Solution

The fourth proportional to 103,536.60, 155,308.40 and 28,650.52 is: 42,976.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,536.60 : 155,308.40 = 28,650.52 : x
  2. Step 2: Convert to fraction form
    103,536.60/155,308.40 = 28,650.52/x
  3. Step 3: Cross multiply
    103,536.60x = 155,308.40 × 28,650.52
  4. Step 4: Simplify right side
    103,536.60x = 4,449,666,420.37
  5. Step 5: Solve for x
    x = 4,449,666,420.37/103,536.60
  6. Step 6: Final answer
    x = 42,976.75

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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.