Home / 45,509.57-68,210.72-20,520.36

Finding the Fourth Proportional to 45,509.57, 68,210.72 and 20,520.36

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Solution

The fourth proportional to 45,509.57, 68,210.72 and 20,520.36 is: 30,756.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,509.57 : 68,210.72 = 20,520.36 : x
  2. Step 2: Convert to fraction form
    45,509.57/68,210.72 = 20,520.36/x
  3. Step 3: Cross multiply
    45,509.57x = 68,210.72 × 20,520.36
  4. Step 4: Simplify right side
    45,509.57x = 1,399,708,530.26
  5. Step 5: Solve for x
    x = 1,399,708,530.26/45,509.57
  6. Step 6: Final answer
    x = 30,756.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.