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Finding the Fourth Proportional to 90,694.52, 125,110.63 and 53,879.72

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Solution

The fourth proportional to 90,694.52, 125,110.63 and 53,879.72 is: 74,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,694.52 : 125,110.63 = 53,879.72 : x
  2. Step 2: Convert to fraction form
    90,694.52/125,110.63 = 53,879.72/x
  3. Step 3: Cross multiply
    90,694.52x = 125,110.63 × 53,879.72
  4. Step 4: Simplify right side
    90,694.52x = 6,740,924,852.15
  5. Step 5: Solve for x
    x = 6,740,924,852.15/90,694.52
  6. Step 6: Final answer
    x = 74,325.60

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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.