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Finding the Fourth Proportional to 103,539.76, 155,309.64 and 33,429.40

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Solution

The fourth proportional to 103,539.76, 155,309.64 and 33,429.40 is: 50,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,539.76 : 155,309.64 = 33,429.40 : x
  2. Step 2: Convert to fraction form
    103,539.76/155,309.64 = 33,429.40/x
  3. Step 3: Cross multiply
    103,539.76x = 155,309.64 × 33,429.40
  4. Step 4: Simplify right side
    103,539.76x = 5,191,907,565.78
  5. Step 5: Solve for x
    x = 5,191,907,565.78/103,539.76
  6. Step 6: Final answer
    x = 50,144.10

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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.