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Finding the Fourth Proportional to 100,051.29, 150,021.55 and 40,928.49

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Solution

The fourth proportional to 100,051.29, 150,021.55 and 40,928.49 is: 61,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,051.29 : 150,021.55 = 40,928.49 : x
  2. Step 2: Convert to fraction form
    100,051.29/150,021.55 = 40,928.49/x
  3. Step 3: Cross multiply
    100,051.29x = 150,021.55 × 40,928.49
  4. Step 4: Simplify right side
    100,051.29x = 6,140,155,508.96
  5. Step 5: Solve for x
    x = 6,140,155,508.96/100,051.29
  6. Step 6: Final answer
    x = 61,370.08

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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.