Home / 55,885.32-77,120.20-30,734.84

Finding the Fourth Proportional to 55,885.32, 77,120.20 and 30,734.84

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Solution

The fourth proportional to 55,885.32, 77,120.20 and 30,734.84 is: 42,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,885.32 : 77,120.20 = 30,734.84 : x
  2. Step 2: Convert to fraction form
    55,885.32/77,120.20 = 30,734.84/x
  3. Step 3: Cross multiply
    55,885.32x = 77,120.20 × 30,734.84
  4. Step 4: Simplify right side
    55,885.32x = 2,370,277,007.77
  5. Step 5: Solve for x
    x = 2,370,277,007.77/55,885.32
  6. Step 6: Final answer
    x = 42,413.23

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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.