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Finding the Fourth Proportional to 40,398.85, 60,606.98 and 20,146.67

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Solution

The fourth proportional to 40,398.85, 60,606.98 and 20,146.67 is: 30,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,398.85 : 60,606.98 = 20,146.67 : x
  2. Step 2: Convert to fraction form
    40,398.85/60,606.98 = 20,146.67/x
  3. Step 3: Cross multiply
    40,398.85x = 60,606.98 × 20,146.67
  4. Step 4: Simplify right side
    40,398.85x = 1,221,029,179.05
  5. Step 5: Solve for x
    x = 1,221,029,179.05/40,398.85
  6. Step 6: Final answer
    x = 30,224.35

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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.