Home / 55,176.38-76,138.14-30,971.80

Finding the Fourth Proportional to 55,176.38, 76,138.14 and 30,971.80

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Solution

The fourth proportional to 55,176.38, 76,138.14 and 30,971.80 is: 42,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,176.38 : 76,138.14 = 30,971.80 : x
  2. Step 2: Convert to fraction form
    55,176.38/76,138.14 = 30,971.80/x
  3. Step 3: Cross multiply
    55,176.38x = 76,138.14 × 30,971.80
  4. Step 4: Simplify right side
    55,176.38x = 2,358,135,054.11
  5. Step 5: Solve for x
    x = 2,358,135,054.11/55,176.38
  6. Step 6: Final answer
    x = 42,738.13

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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.