Home / 71,457.20-98,611.20-39,629.04

Finding the Fourth Proportional to 71,457.20, 98,611.20 and 39,629.04

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Solution

The fourth proportional to 71,457.20, 98,611.20 and 39,629.04 is: 54,688.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,457.20 : 98,611.20 = 39,629.04 : x
  2. Step 2: Convert to fraction form
    71,457.20/98,611.20 = 39,629.04/x
  3. Step 3: Cross multiply
    71,457.20x = 98,611.20 × 39,629.04
  4. Step 4: Simplify right side
    71,457.20x = 3,907,867,189.25
  5. Step 5: Solve for x
    x = 3,907,867,189.25/71,457.20
  6. Step 6: Final answer
    x = 54,688.22

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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.