Home / 45,411.12-67,985.46-28,789.92

Finding the Fourth Proportional to 45,411.12, 67,985.46 and 28,789.92

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Solution

The fourth proportional to 45,411.12, 67,985.46 and 28,789.92 is: 43,101.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,411.12 : 67,985.46 = 28,789.92 : x
  2. Step 2: Convert to fraction form
    45,411.12/67,985.46 = 28,789.92/x
  3. Step 3: Cross multiply
    45,411.12x = 67,985.46 × 28,789.92
  4. Step 4: Simplify right side
    45,411.12x = 1,957,295,954.56
  5. Step 5: Solve for x
    x = 1,957,295,954.56/45,411.12
  6. Step 6: Final answer
    x = 43,101.69

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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.