Home / 50,115.80-69,133.59-30,989.46

Finding the Fourth Proportional to 50,115.80, 69,133.59 and 30,989.46

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Solution

The fourth proportional to 50,115.80, 69,133.59 and 30,989.46 is: 42,749.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,115.80 : 69,133.59 = 30,989.46 : x
  2. Step 2: Convert to fraction form
    50,115.80/69,133.59 = 30,989.46/x
  3. Step 3: Cross multiply
    50,115.80x = 69,133.59 × 30,989.46
  4. Step 4: Simplify right side
    50,115.80x = 2,142,412,639.85
  5. Step 5: Solve for x
    x = 2,142,412,639.85/50,115.80
  6. Step 6: Final answer
    x = 42,749.24

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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.