Home / 71,720.28-107,597.43-45,447.12

Finding the Fourth Proportional to 71,720.28, 107,597.43 and 45,447.12

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Solution

The fourth proportional to 71,720.28, 107,597.43 and 45,447.12 is: 68,181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,720.28 : 107,597.43 = 45,447.12 : x
  2. Step 2: Convert to fraction form
    71,720.28/107,597.43 = 45,447.12/x
  3. Step 3: Cross multiply
    71,720.28x = 107,597.43 × 45,447.12
  4. Step 4: Simplify right side
    71,720.28x = 4,889,993,312.90
  5. Step 5: Solve for x
    x = 4,889,993,312.90/71,720.28
  6. Step 6: Final answer
    x = 68,181.46

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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.