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Finding the Fourth Proportional to 40,698.40, 61,058.40 and 14,400.40

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Solution

The fourth proportional to 40,698.40, 61,058.40 and 14,400.40 is: 21,604.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,698.40 : 61,058.40 = 14,400.40 : x
  2. Step 2: Convert to fraction form
    40,698.40/61,058.40 = 14,400.40/x
  3. Step 3: Cross multiply
    40,698.40x = 61,058.40 × 14,400.40
  4. Step 4: Simplify right side
    40,698.40x = 879,265,383.36
  5. Step 5: Solve for x
    x = 879,265,383.36/40,698.40
  6. Step 6: Final answer
    x = 21,604.42

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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.