Home / 50,128.92-75,127.86-20,530.62

Finding the Fourth Proportional to 50,128.92, 75,127.86 and 20,530.62

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Solution

The fourth proportional to 50,128.92, 75,127.86 and 20,530.62 is: 30,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,128.92 : 75,127.86 = 20,530.62 : x
  2. Step 2: Convert to fraction form
    50,128.92/75,127.86 = 20,530.62/x
  3. Step 3: Cross multiply
    50,128.92x = 75,127.86 × 20,530.62
  4. Step 4: Simplify right side
    50,128.92x = 1,542,421,545.07
  5. Step 5: Solve for x
    x = 1,542,421,545.07/50,128.92
  6. Step 6: Final answer
    x = 30,769.10

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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.