Home / 55,912.87-77,160.97-30,420.96

Finding the Fourth Proportional to 55,912.87, 77,160.97 and 30,420.96

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Solution

The fourth proportional to 55,912.87, 77,160.97 and 30,420.96 is: 41,981.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,912.87 : 77,160.97 = 30,420.96 : x
  2. Step 2: Convert to fraction form
    55,912.87/77,160.97 = 30,420.96/x
  3. Step 3: Cross multiply
    55,912.87x = 77,160.97 × 30,420.96
  4. Step 4: Simplify right side
    55,912.87x = 2,347,310,781.93
  5. Step 5: Solve for x
    x = 2,347,310,781.93/55,912.87
  6. Step 6: Final answer
    x = 41,981.58

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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.