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Finding the Fourth Proportional to 90,986.70, 125,559.75 and 50,700.30

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Solution

The fourth proportional to 90,986.70, 125,559.75 and 50,700.30 is: 69,965.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,986.70 : 125,559.75 = 50,700.30 : x
  2. Step 2: Convert to fraction form
    90,986.70/125,559.75 = 50,700.30/x
  3. Step 3: Cross multiply
    90,986.70x = 125,559.75 × 50,700.30
  4. Step 4: Simplify right side
    90,986.70x = 6,365,916,992.93
  5. Step 5: Solve for x
    x = 6,365,916,992.93/90,986.70
  6. Step 6: Final answer
    x = 69,965.36

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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.