Home / 55,127.20-76,069.20-31,249.12

Finding the Fourth Proportional to 55,127.20, 76,069.20 and 31,249.12

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Solution

The fourth proportional to 55,127.20, 76,069.20 and 31,249.12 is: 43,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,127.20 : 76,069.20 = 31,249.12 : x
  2. Step 2: Convert to fraction form
    55,127.20/76,069.20 = 31,249.12/x
  3. Step 3: Cross multiply
    55,127.20x = 76,069.20 × 31,249.12
  4. Step 4: Simplify right side
    55,127.20x = 2,377,095,559.10
  5. Step 5: Solve for x
    x = 2,377,095,559.10/55,127.20
  6. Step 6: Final answer
    x = 43,120.19

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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.