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Finding the Fourth Proportional to 40,435.40, 60,653.10 and 14,137.40

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Solution

The fourth proportional to 40,435.40, 60,653.10 and 14,137.40 is: 21,206.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,435.40 : 60,653.10 = 14,137.40 : x
  2. Step 2: Convert to fraction form
    40,435.40/60,653.10 = 14,137.40/x
  3. Step 3: Cross multiply
    40,435.40x = 60,653.10 × 14,137.40
  4. Step 4: Simplify right side
    40,435.40x = 857,477,135.94
  5. Step 5: Solve for x
    x = 857,477,135.94/40,435.40
  6. Step 6: Final answer
    x = 21,206.10

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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.