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Finding the Fourth Proportional to 45,385.43, 68,078.62 and 13,800.62

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Solution

The fourth proportional to 45,385.43, 68,078.62 and 13,800.62 is: 20,701.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,385.43 : 68,078.62 = 13,800.62 : x
  2. Step 2: Convert to fraction form
    45,385.43/68,078.62 = 13,800.62/x
  3. Step 3: Cross multiply
    45,385.43x = 68,078.62 × 13,800.62
  4. Step 4: Simplify right side
    45,385.43x = 939,527,352.19
  5. Step 5: Solve for x
    x = 939,527,352.19/45,385.43
  6. Step 6: Final answer
    x = 20,701.08

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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.