Home / 55,811.92-77,020.36-30,661.44

Finding the Fourth Proportional to 55,811.92, 77,020.36 and 30,661.44

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Solution

The fourth proportional to 55,811.92, 77,020.36 and 30,661.44 is: 42,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,811.92 : 77,020.36 = 30,661.44 : x
  2. Step 2: Convert to fraction form
    55,811.92/77,020.36 = 30,661.44/x
  3. Step 3: Cross multiply
    55,811.92x = 77,020.36 × 30,661.44
  4. Step 4: Simplify right side
    55,811.92x = 2,361,555,146.92
  5. Step 5: Solve for x
    x = 2,361,555,146.92/55,811.92
  6. Step 6: Final answer
    x = 42,312.74

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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.