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Finding the Fourth Proportional to 71,420.94, 107,121.08 and 50,008.69

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Solution

The fourth proportional to 71,420.94, 107,121.08 and 50,008.69 is: 75,005.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,420.94 : 107,121.08 = 50,008.69 : x
  2. Step 2: Convert to fraction form
    71,420.94/107,121.08 = 50,008.69/x
  3. Step 3: Cross multiply
    71,420.94x = 107,121.08 × 50,008.69
  4. Step 4: Simplify right side
    71,420.94x = 5,356,985,141.11
  5. Step 5: Solve for x
    x = 5,356,985,141.11/71,420.94
  6. Step 6: Final answer
    x = 75,005.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.