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Finding the Fourth Proportional to 90,954, 125,511.64 and 50,116.86

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Solution

The fourth proportional to 90,954, 125,511.64 and 50,116.86 is: 69,158.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,954 : 125,511.64 = 50,116.86 : x
  2. Step 2: Convert to fraction form
    90,954/125,511.64 = 50,116.86/x
  3. Step 3: Cross multiply
    90,954x = 125,511.64 × 50,116.86
  4. Step 4: Simplify right side
    90,954x = 6,290,249,290.25
  5. Step 5: Solve for x
    x = 6,290,249,290.25/90,954
  6. Step 6: Final answer
    x = 69,158.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.