Home / 45,222.89-67,856.81-20,280.56

Finding the Fourth Proportional to 45,222.89, 67,856.81 and 20,280.56

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Solution

The fourth proportional to 45,222.89, 67,856.81 and 20,280.56 is: 30,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,222.89 : 67,856.81 = 20,280.56 : x
  2. Step 2: Convert to fraction form
    45,222.89/67,856.81 = 20,280.56/x
  3. Step 3: Cross multiply
    45,222.89x = 67,856.81 × 20,280.56
  4. Step 4: Simplify right side
    45,222.89x = 1,376,173,665.93
  5. Step 5: Solve for x
    x = 1,376,173,665.93/45,222.89
  6. Step 6: Final answer
    x = 30,430.91

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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.