Home / 55,170.50-76,143.78-31,292.10

Finding the Fourth Proportional to 55,170.50, 76,143.78 and 31,292.10

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Solution

The fourth proportional to 55,170.50, 76,143.78 and 31,292.10 is: 43,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,170.50 : 76,143.78 = 31,292.10 : x
  2. Step 2: Convert to fraction form
    55,170.50/76,143.78 = 31,292.10/x
  3. Step 3: Cross multiply
    55,170.50x = 76,143.78 × 31,292.10
  4. Step 4: Simplify right side
    55,170.50x = 2,382,698,778.14
  5. Step 5: Solve for x
    x = 2,382,698,778.14/55,170.50
  6. Step 6: Final answer
    x = 43,187.91

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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.