Home / 50,990.85-70,366.32-30,840.48

Finding the Fourth Proportional to 50,990.85, 70,366.32 and 30,840.48

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Solution

The fourth proportional to 50,990.85, 70,366.32 and 30,840.48 is: 42,559.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,990.85 : 70,366.32 = 30,840.48 : x
  2. Step 2: Convert to fraction form
    50,990.85/70,366.32 = 30,840.48/x
  3. Step 3: Cross multiply
    50,990.85x = 70,366.32 × 30,840.48
  4. Step 4: Simplify right side
    50,990.85x = 2,170,131,084.63
  5. Step 5: Solve for x
    x = 2,170,131,084.63/50,990.85
  6. Step 6: Final answer
    x = 42,559.23

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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.