Home / 55,081.68-76,008.42-31,212.09

Finding the Fourth Proportional to 55,081.68, 76,008.42 and 31,212.09

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Solution

The fourth proportional to 55,081.68, 76,008.42 and 31,212.09 is: 43,070.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,081.68 : 76,008.42 = 31,212.09 : x
  2. Step 2: Convert to fraction form
    55,081.68/76,008.42 = 31,212.09/x
  3. Step 3: Cross multiply
    55,081.68x = 76,008.42 × 31,212.09
  4. Step 4: Simplify right side
    55,081.68x = 2,372,381,645.80
  5. Step 5: Solve for x
    x = 2,372,381,645.80/55,081.68
  6. Step 6: Final answer
    x = 43,070.25

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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.