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Finding the Fourth Proportional to 90,411.80, 135,666.30 and 37,826.60

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Solution

The fourth proportional to 90,411.80, 135,666.30 and 37,826.60 is: 56,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,411.80 : 135,666.30 = 37,826.60 : x
  2. Step 2: Convert to fraction form
    90,411.80/135,666.30 = 37,826.60/x
  3. Step 3: Cross multiply
    90,411.80x = 135,666.30 × 37,826.60
  4. Step 4: Simplify right side
    90,411.80x = 5,131,794,863.58
  5. Step 5: Solve for x
    x = 5,131,794,863.58/90,411.80
  6. Step 6: Final answer
    x = 56,760.23

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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.