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Finding the Fourth Proportional to 80,655.88, 111,328.50 and 50,038.30

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Solution

The fourth proportional to 80,655.88, 111,328.50 and 50,038.30 is: 69,067.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,655.88 : 111,328.50 = 50,038.30 : x
  2. Step 2: Convert to fraction form
    80,655.88/111,328.50 = 50,038.30/x
  3. Step 3: Cross multiply
    80,655.88x = 111,328.50 × 50,038.30
  4. Step 4: Simplify right side
    80,655.88x = 5,570,689,499.92
  5. Step 5: Solve for x
    x = 5,570,689,499.92/80,655.88
  6. Step 6: Final answer
    x = 69,067.37

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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.