Home / 71,313.24-98,415.90-39,485.64

Finding the Fourth Proportional to 71,313.24, 98,415.90 and 39,485.64

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Solution

The fourth proportional to 71,313.24, 98,415.90 and 39,485.64 is: 54,492.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,313.24 : 98,415.90 = 39,485.64 : x
  2. Step 2: Convert to fraction form
    71,313.24/98,415.90 = 39,485.64/x
  3. Step 3: Cross multiply
    71,313.24x = 98,415.90 × 39,485.64
  4. Step 4: Simplify right side
    71,313.24x = 3,886,014,797.68
  5. Step 5: Solve for x
    x = 3,886,014,797.68/71,313.24
  6. Step 6: Final answer
    x = 54,492.19

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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.