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Finding the Fourth Proportional to 90,605.91, 125,040.30 and 50,319.84

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Solution

The fourth proportional to 90,605.91, 125,040.30 and 50,319.84 is: 69,443.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,605.91 : 125,040.30 = 50,319.84 : x
  2. Step 2: Convert to fraction form
    90,605.91/125,040.30 = 50,319.84/x
  3. Step 3: Cross multiply
    90,605.91x = 125,040.30 × 50,319.84
  4. Step 4: Simplify right side
    90,605.91x = 6,292,007,889.55
  5. Step 5: Solve for x
    x = 6,292,007,889.55/90,605.91
  6. Step 6: Final answer
    x = 69,443.68

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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.