Home / 71,922.15-99,253.87-40,087.62

Finding the Fourth Proportional to 71,922.15, 99,253.87 and 40,087.62

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Solution

The fourth proportional to 71,922.15, 99,253.87 and 40,087.62 is: 55,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,922.15 : 99,253.87 = 40,087.62 : x
  2. Step 2: Convert to fraction form
    71,922.15/99,253.87 = 40,087.62/x
  3. Step 3: Cross multiply
    71,922.15x = 99,253.87 × 40,087.62
  4. Step 4: Simplify right side
    71,922.15x = 3,978,851,323.87
  5. Step 5: Solve for x
    x = 3,978,851,323.87/71,922.15
  6. Step 6: Final answer
    x = 55,321.64

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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.