Home / 71,235.12-98,302.72-39,403.28

Finding the Fourth Proportional to 71,235.12, 98,302.72 and 39,403.28

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Solution

The fourth proportional to 71,235.12, 98,302.72 and 39,403.28 is: 54,375.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,235.12 : 98,302.72 = 39,403.28 : x
  2. Step 2: Convert to fraction form
    71,235.12/98,302.72 = 39,403.28/x
  3. Step 3: Cross multiply
    71,235.12x = 98,302.72 × 39,403.28
  4. Step 4: Simplify right side
    71,235.12x = 3,873,449,600.92
  5. Step 5: Solve for x
    x = 3,873,449,600.92/71,235.12
  6. Step 6: Final answer
    x = 54,375.56

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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.