Home / 55,220.13-76,112.78-39,066.57

Finding the Fourth Proportional to 55,220.13, 76,112.78 and 39,066.57

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Solution

The fourth proportional to 55,220.13, 76,112.78 and 39,066.57 is: 53,847.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,220.13 : 76,112.78 = 39,066.57 : x
  2. Step 2: Convert to fraction form
    55,220.13/76,112.78 = 39,066.57/x
  3. Step 3: Cross multiply
    55,220.13x = 76,112.78 × 39,066.57
  4. Step 4: Simplify right side
    55,220.13x = 2,973,465,052.43
  5. Step 5: Solve for x
    x = 2,973,465,052.43/55,220.13
  6. Step 6: Final answer
    x = 53,847.48

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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.