Home / 40,362.80-55,662.04-30,785.70

Finding the Fourth Proportional to 40,362.80, 55,662.04 and 30,785.70

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Solution

The fourth proportional to 40,362.80, 55,662.04 and 30,785.70 is: 42,454.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,362.80 : 55,662.04 = 30,785.70 : x
  2. Step 2: Convert to fraction form
    40,362.80/55,662.04 = 30,785.70/x
  3. Step 3: Cross multiply
    40,362.80x = 55,662.04 × 30,785.70
  4. Step 4: Simplify right side
    40,362.80x = 1,713,594,864.83
  5. Step 5: Solve for x
    x = 1,713,594,864.83/40,362.80
  6. Step 6: Final answer
    x = 42,454.81

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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.