Home / 55,811.05-77,019.29-30,660.55

Finding the Fourth Proportional to 55,811.05, 77,019.29 and 30,660.55

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Solution

The fourth proportional to 55,811.05, 77,019.29 and 30,660.55 is: 42,311.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,811.05 : 77,019.29 = 30,660.55 : x
  2. Step 2: Convert to fraction form
    55,811.05/77,019.29 = 30,660.55/x
  3. Step 3: Cross multiply
    55,811.05x = 77,019.29 × 30,660.55
  4. Step 4: Simplify right side
    55,811.05x = 2,361,453,792.01
  5. Step 5: Solve for x
    x = 2,361,453,792.01/55,811.05
  6. Step 6: Final answer
    x = 42,311.58

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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.