Home / 56,628.04-78,147.20-30,786.64

Finding the Fourth Proportional to 56,628.04, 78,147.20 and 30,786.64

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Solution

The fourth proportional to 56,628.04, 78,147.20 and 30,786.64 is: 42,485.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,628.04 : 78,147.20 = 30,786.64 : x
  2. Step 2: Convert to fraction form
    56,628.04/78,147.20 = 30,786.64/x
  3. Step 3: Cross multiply
    56,628.04x = 78,147.20 × 30,786.64
  4. Step 4: Simplify right side
    56,628.04x = 2,405,889,713.41
  5. Step 5: Solve for x
    x = 2,405,889,713.41/56,628.04
  6. Step 6: Final answer
    x = 42,485.84

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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.