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Finding the Fourth Proportional to 90,662.73, 125,078.73 and 52,415.24

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Solution

The fourth proportional to 90,662.73, 125,078.73 and 52,415.24 is: 72,312.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,662.73 : 125,078.73 = 52,415.24 : x
  2. Step 2: Convert to fraction form
    90,662.73/125,078.73 = 52,415.24/x
  3. Step 3: Cross multiply
    90,662.73x = 125,078.73 × 52,415.24
  4. Step 4: Simplify right side
    90,662.73x = 6,556,031,651.85
  5. Step 5: Solve for x
    x = 6,556,031,651.85/90,662.73
  6. Step 6: Final answer
    x = 72,312.31

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1.5x scale

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.