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Finding the Fourth Proportional to 71,647.95, 107,471.79 and 19,057.49

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Solution

The fourth proportional to 71,647.95, 107,471.79 and 19,057.49 is: 28,586.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,647.95 : 107,471.79 = 19,057.49 : x
  2. Step 2: Convert to fraction form
    71,647.95/107,471.79 = 19,057.49/x
  3. Step 3: Cross multiply
    71,647.95x = 107,471.79 × 19,057.49
  4. Step 4: Simplify right side
    71,647.95x = 2,048,142,563.21
  5. Step 5: Solve for x
    x = 2,048,142,563.21/71,647.95
  6. Step 6: Final answer
    x = 28,586.20

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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.